Air cooler or AIO? Choose by case clearance, noise and maintenance
Compare air coolers and AIOs by workload, noise, RAM clearance and radiator fit, with concrete sizing examples, total-cost checks and practical fault-diagnosis steps.
Read guide →Choose PC hardware and accessories
A connector shape does not establish charging, display or transfer support. Match the specifications of the computer, accessory and cable. For storage, plan how to recover files as well as how much space you need.
Before choosing a task
- Check the computer model and port specifications in the manufacturer documentation.
- List the devices you will connect together and their storage, power and display requirements.
- Keep the original data and verify reading, writing and restoring files after setup.
Compare the options
PCIe 4.0 or 5.0 SSD for gaming? Check load times, capacity and slot sharing
Choose a PCIe 4.0 or 5.0 gaming SSD using measured load times, capacity, sustained writes and cooling needs, then check shared M.2 lanes and the full upgrade cost.
Read guide →DDR4 vs. DDR5: Choose for a New Build, Reused RAM and Upgrade Cost
Choose DDR4 or DDR5 around your platform and reused parts. Check board compatibility, memory kits and the full upgrade cost before replacing your RAM.
Read guide →DDR5 with Two or Four DIMMs: Compare Upgrade Speed Limits and Kits
Compare two- and four-DIMM DDR5 upgrades. Check CPU speed limits, tested kit populations, mixing restrictions and capacity verification before buying RAM.
Read guide →Integrated vs. Discrete Graphics: Check Workloads, CPU Models and Outputs
Choose integrated or discrete graphics by checking workloads, exact CPU graphics, shared memory, display ports and upgrade costs before buying a card.
Read guide →1080p, 1440p or 4K: Plan a Gaming Monitor and GPU Budget Together
Compare 1080p, 1440p and 4K using target FPS, refresh rate and GPU evidence. Check port limits and the total monitor, GPU and cable cost before buying.
Read guide →External SSD vs HDD for backups: capacity, speed and portability
Compare external SSDs and HDDs for backups by capacity, transfer time, portability and connection speed, then check a restore before relying on your purchase.
Read guide →NAS vs cloud backup: costs, recovery time and maintenance
Compare NAS and cloud backup costs, recovery time and maintenance. Distinguish PC backup from NAS backup services and test recovery before moving all your data.
Read guide →USB-C Hub vs Thunderbolt Dock: Displays, Power, and Compatibility
Compare USB-C hubs and Thunderbolt docks by host compatibility, displays, charging, and peripherals, with a practical checklist for buying and testing a dock.
Read guide →DisplayPort vs. HDMI for 144Hz, 4K and 240Hz Monitors: Check Ports, Cables and GPU Support
Decide whether to connect a 144Hz, 4K or 240Hz monitor over DisplayPort or HDMI using VESA and HDMI Forum bandwidth figures, GeForce RTX 50, Radeon RX 9070 and Arc B580 output specifications, LG and ASUS monitor input conditions and certified cable names.
Read guide →CMR vs. SMR Hard Drives: Tell Them Apart by Model Number for NAS, RAID and Backup
Understand CMR versus SMR using Western Digital and Seagate documentation: WD Red (SMR) and WD Red Plus (CMR) model numbers, Seagate's recording-technology list, why SMR struggles in RAID rebuilds, which type fits each use, and how to verify the model number before ordering.
Read guide →Which Ethernet Cable Category for 2.5GbE and 10GbE: Cat5e, Cat6 or Cat6A
Find the Ethernet cable category that 2.5GbE, 5GbE and 10GbE links actually need: the distance limits that separate Cat6 from Cat6A, when existing Cat5e runs can stay, and the trade-offs of slim, flat and shielded cables.
Read guide →Choosing a UPS for a Desktop or Custom-Built PC: Why Sine Wave Output Matters and How to Size VA and W
Sizing a UPS for a desktop PC: why PFC power supplies and square-wave output conflict, how to size by both VA and W with headroom, how much runtime to allow for a shutdown, and how the delivery methods differ.
Read guide →Choosing an M.2 SSD enclosure: USB 10Gbps vs 20Gbps vs USB4 (40Gbps) vs Thunderbolt, and checking your PC's port
Compare M.2 SSD enclosures by connection - USB 10Gbps, 20Gbps, USB4 40Gbps and Thunderbolt - with the port check on your own PC, the Gbps-to-MB/s conversion, and the SATA and heatsink limits that catch buyers out.
Read guide →Choosing a Monitor Arm: Minimum and Maximum Weight, VESA Pattern, Curved Monitors and Desk Thickness
Read the monitor's weight without stand, VESA hole pattern and depth from its specifications, then check them against the arm's minimum and maximum load, its curved-monitor conditions and the desk thickness it supports.
Read guide →SSD Endurance (TBW) and Warranty: Compare Write Limits of Popular NVMe SSDs by Capacity and Check Wear in Windows
An NVMe SSD warranty ends at its stated period or at its TBW (total bytes written), whichever comes first. Compare TBW and warranty terms by capacity, convert TBW into writes per day, and read the wear indicator in Windows.
Read guide →How to Choose a USB-C Cable: 60W vs 240W Power Marks, 10Gbps to 80Gbps Data Rates and Video Output by Use
A USB-C cable can be rated for 240W and still transfer data at USB 2.0 speed with no video at all. See which data rate and wattage charging, external SSDs, USB4 docks and USB-C monitors each actually need.
Read guide →Mechanical Keyboard Switches: Red, Brown and Blue Force and Sound Compared, Plus Which Switches Fit a Hot-Swap Board
Compare red, brown, blue and silent-red switches by published operating force, travel and rated keystrokes, then check which 3-pin or 5-pin MX-style switches a hot-swappable keyboard actually accepts.
Read guide →OLED monitor burn-in warranty and care: how to check warranty length and burn-in coverage before you buy
Before buying an OLED gaming monitor, check on ASUS and Dell official pages whether burn-in is covered and whether the warranty is 24 or 36 months. Also covers what Pixel Shift, the screen saver and the roughly 6-minute pixel cleaning do, how to power the monitor off, and what to do first when image retention appears.
Read guide →Monitor Color Gamut Explained: sRGB and DCI-P3 Coverage vs Area Ratio for Photo and Video Editing
"sRGB 100%" or "DCI-P3 95%" means different things depending on whether it is coverage or an area ratio. See which gamut to check for each use, how gamut conversion modes and Delta E are stated, and what Windows 11 needs.
Read guide →Mouse Polling Rate vs DPI: Choosing Between 1000 Hz and 8000 Hz Using Manufacturer Documentation
Polling rate is how often the mouse reports to the PC; DPI is how far the cursor travels. See which rate each use case needs, what an 8000 Hz connection requires, its cost, and how to handle pointer precision in Windows.
Read guide →USB vs PCIe Wi-Fi Adapter: Check Installation Requirements, Bluetooth and Speed Labels Before Buying
A USB Wi-Fi adapter and a PCIe Wi-Fi card have different installation requirements on a desktop PC. Check the slot and internal header a card needs, the USB port version an adapter specifies, and how to read advertised speeds.
Read guide →Connecting a Game Controller to a PC: USB Cable vs Bluetooth vs Xbox Wireless Adapter
On Windows, the connection you choose changes which controller features work and how many pads you can use at once. Compare USB, Bluetooth and the Xbox Wireless Adapter using Microsoft’s and Sony’s support documentation.
Read guide →SD and microSD Card Ratings: Choosing V30, U3, A2, UHS-II and SD Express by Use Case
Read an SD or microSD card’s markings: the minimum write speed each speed class guarantees, the bus speeds behind UHS-I/II/III and SD Express, what A1 and A2 mean, and the SDHC/SDXC/SDUC compatibility rules.
Read guide →Choosing a Webcam: Resolution and Frame Rate Pairs, Field of View, Fixed Focus vs Autofocus
A "4K" label does not decide what your meeting actually sends. Compare published resolution and frame-rate pairs, field of view, and fixed focus against autofocus, then check the limits Zoom and Microsoft Teams document.
Read guide →PC Headset Connections: USB, 3.5 mm, 2.4 GHz Dongle or Bluetooth, and What Happens to the Microphone
A Bluetooth headset sounding worse the moment you speak is by design. See when Windows switches from stereo playback to the mono voice profile, what LE Audio changes and requires, and when a dongle or 3.5 mm is the better buy.
Read guide →USB-C Monitor Not Working or Stuck at a Low Refresh Rate: Check DP Alt Mode and Lane Allocation
No picture over a single USB-C cable, or a 144Hz monitor stuck at 60Hz, is usually the port on the PC rather than the cable. Check DP Alt Mode support, lane allocation, link rate and the monitor’s own priority setting.
Read guide →G-SYNC vs FreeSync Certification: What Each Badge Guarantees and How to Read a VRR Range
G-SYNC, G-SYNC Compatible, FreeSync Premium and VESA Certified AdaptiveSync are four badges with four different pass conditions. See what each one guarantees, and how to read a variable refresh rate range before buying.
Read guide →Measure Laptop Battery Wear: Reading the Windows Battery Report and Deciding When to Replace
When runtime gets short, decide with numbers rather than impressions. Read design and full-charge capacity from powercfg /batteryreport, compare it with Dell’s published replacement criteria, and apply Microsoft’s charging guidance.
Read guide →IPS vs VA vs TN vs OLED, and How to Read "1ms": Panel Type and Response Time on a Spec Sheet
The "1ms" on the box is GTG on one model and MPRT on another: two different measurements. Compare how IPS, VA, TN and OLED behave, and learn which response-time row on a spec sheet can be compared at all.
Read guide →TLC vs QLC and DRAM vs DRAM-less (HMB): reading post-SLC-cache write speed off the datasheet
A cheap high-capacity SSD that crawls partway through a long write has run out of SLC cache. Find the post-cache write speed and the DRAM or HMB row on the datasheet, and see which workloads actually notice.
Read guide →USB mic or XLR mic plus an audio interface: gain, phantom power and monitoring decide it
A USB mic carries its preamp inside; an XLR mic needs one in the interface. Use the gain, sensitivity and phantom-power figures Shure and RØDE publish to check compatibility before committing to either route.
Read guide →How to read printer page yield: cartridges, ink tanks and laser under the ISO test conditions
Page yield is measured under ISO/IEC test conditions whose assumptions differ per product. Use Epson’s stated conditions and per-colour yields and Brother’s consumable page counts to estimate running cost before buying.
Read guide →Mesh Wi-Fi, one router, or a wired access point: backhaul and installation decide it
Coverage-area figures alone cannot settle this. Compare mesh, one router and a wired access point by backhaul wiring, recommended unit count, placement conditions and the power an access point needs - plus what to verify afterwards.
Read guide →Choosing a capture card: recording and passthrough resolutions differ, and the port sets the ceiling
A "4K" capture card is usually quoting the passthrough path, not what it can record. Compare AVerMedia’s published specifications for USB and PCIe cards, and see what HDCP, EDID and the port generation decide.
Read guide →Single-cable USB-C monitors: match the monitor's supply wattage against your laptop's rating
A monitor advertising video, data and charging over one USB-C cable may still not power your laptop. Compare Dell’s published charging table and its stated conditions against your laptop’s rated wattage before buying.
Read guide →M.2 SSD heatsinks: clearance, warranty terms and the PS5 requirement decide bundled or bare
Whether to buy an SSD with a heatsink is usually settled by clearance and warranty wording rather than by comparing cooling. Check Samsung’s published heights and warranty note, the power figures, and the PS5 size limits.
Read guide →Pen tablet or pen display: check the connection requirement and the desk before the pressure levels
Pen tablet or pen display comes down to your ports and your desk, not the pressure-level number. Compare Wacom’s published specifications for four models: connection type, mains power, active area and installation cautions.
Read guide →Onboard audio or a USB DAC/headphone amp: work out the voltage your headphones actually need
Headphones need voltage, not just "an amp". Put the two sensitivity conventions manufacturers publish onto one scale, compare the result with the output Creative and FiiO state, and see what a motherboard sheet omits.
Read guide →Choosing a KVM switch: the video ceiling row, keyboard/mouse emulation and EDID
Buying a KVM switch on the word "4K" goes wrong quickly. ATEN publishes the video ceiling as resolution-and-refresh pairs; hotkey switching depends on keyboard/mouse emulation, and windows moving on every switch on EDID.
Read guide →Check a laptop's upgradeability before you buy: soldered memory, M.2 slot count and battery capacity
Whether a laptop’s memory and storage can be expanded later is published before you buy. Learn which rows of Lenovo PSREF and Dell specification sheets state soldered memory, M.2 slot count and battery capacity.
Read guide →How much SSD does a gaming PC need? Windows requirements, published game sizes, library placement
"Is 1TB enough?" is addition. Add Microsoft’s published Windows and DirectStorage requirements to the install sizes game studios publish, allow for the 1TB-shows-as-about-931GB conversion, and decide before buying.
Read guide →Adding Windows Hello: fingerprint reader or IR camera, and what Enhanced sign-in security rules out
Face sign-in needs an infrared camera; a fingerprint reader plugs into USB. See what Windows 11 Enhanced sign-in security rules out, and which rows of Kensington’s and Logitech’s specifications to check before buying.
Read guide →Adding Bluetooth to a desktop PC: reading a USB adapter's version number, placement and limits
Before buying a Bluetooth dongle for a desktop PC, read your current radio’s LMP number in Device Manager, then check the adapter’s listed operating systems, size and USB port - and what an adapter cannot fix.
Read guide →4K text too small? Choosing size, resolution and Windows scaling from published PPI
On a 27-inch screen the same text is much smaller at 4K than at QHD. Windows treats 100% scaling as 96 DPI, so with the maker’s published pixel pitch you can work out size, resolution and scaling before you buy.
Read guide →USB receiver or Bluetooth for a wireless mouse and keyboard: what each one actually requires
The same mouse often ships in a dongle version and a Bluetooth version. Compare what Logitech and Razer publish about receiver capacity, pairing security and interchangeability, and the conditions behind range and latency claims.
Read guide →Choosing a portable monitor: what one USB-C cable has to carry, and when it is not enough
A portable monitor draws its picture and its power from the same USB-C cable. Check the host requirements Dell and ASUS publish - DP Alt Mode, PD level and watts - and what happens on a port without DP Alt Mode.
Read guide →Use your phone as a webcam, or buy one? What Windows 11 documents, and what it does not
Windows 11 can use a linked Android phone as a webcam. Compare Microsoft’s published requirements and setup steps with what webcam makers specify, including the one job a phone cannot do: Hello face sign-in.
Read guide →DisplayHDR 400 vs 600 vs True Black: reading an "HDR support" claim against the VESA criteria and what Windows asks for
Two monitors can both say "HDR support" and not be the same thing. Read the rows of VESA’s published CTS 1.2 criteria that decide a purchase, and the conditions Windows requires before HDR appears at all.
Read guide →Buy HDMI and DisplayPort cables by certification name, not by version number: Ultra96, Ultra High Speed, DP40/DP54/DP80
"HDMI 2.1 cable" and "8K ready" are not names the standards bodies apply to cables. Here are the official cable names HDMI LA and VESA publish, and how their labels, QR codes and logos are meant to be checked.
Read guide →Choosing a router for a Japanese IPv6 IPoE line: why "IPv6 support" on the box is not enough
v6 Plus, transix, IPv6 Option, OCN Virtual Connect, Cross Path, v6 Connect. Find the method name your contract uses, then read the maker's table: supported from launch, supported from a firmware version, or not listed at all.
Read guide →Windows 11 runs but the feature is missing: checking the per-feature requirements before you buy
DirectStorage, Hyper-V, three-column Snap and Wi-Fi 7 can be absent by design rather than broken. How to read the per-feature requirements Microsoft publishes separately from the minimum ones, and how to tell a requirement you can add later from one you cannot.
Read guide →Japan's 6 GHz Wi-Fi rules: how many 320 MHz channels, and which devices may go outdoors
Before buying a Wi-Fi 7 router labelled 320 MHz, check what Japan actually allocates at 6 GHz, how many channels each width yields, and the difference between indoor-only LPI and outdoor-capable VLP, as published by Japan's Ministry of Internal Affairs and Communications.
Read guide →Is a dead pixel covered? Bright dots, dark dots and zero-bright-dot warranties, checked before you buy
One red dot on a brand-new monitor: whether it can be exchanged was decided before you ordered. Two Japanese makers' published pixel-defect definitions and zero-bright-dot warranty terms are set side by side to show how differently the same-sounding policy works.
Read guide →How many external displays can you actually connect? GPU limits and the two kinds of dock
Buying a dock does not automatically add screens. The limit is set in three places: the GPU's maximum simultaneous displays, whether video is present on the port at all, and which kind of dock you bought. Includes how differently NVIDIA and AMD publish the figure.
Read guide →What a quoted battery run time actually measures: reading JEITA-BAT 3.0 figures
Japanese laptop catalogues quote two battery figures, video playback and idle. Here is what the standard measures, what it explicitly refuses to specify, and why a Ver. 2.0 number cannot be compared with a Ver. 3.0 one.
Read guide →Japan's technical conformity mark: what to check before importing a wireless PC accessory
Whether an imported wireless mouse, Bluetooth adapter or Wi-Fi router may be used in Japan is decided by the Radio Act's conformity certification scheme. The three certification routes, who may apply for each, the marking rules, and how to check a model number against the ministry's database.
Read guide →Will your old printer work on Windows 11? Microsoft's printer-driver end-of-servicing dates, and what the IPP class driver covers
The maker's driver will not install, or Windows quietly switches to "Microsoft IPP Class Driver". That is a staged change Microsoft has published dates for, and two of the four stages have already passed. This guide separates what ends from what explicitly does not.
Read guide →Third-party and refill ink versus the maker's warranty: reading the actual repair terms from Epson, Brother and Canon
"Third-party ink voids the warranty" is not what the published terms say. All three makers condition it on damage caused by the consumable, not on having used one. This guide sets the three clauses side by side and adds what happens when you send the printer in.
Read guide →DDR5 CUDIMM explained: what the on-module clock driver changes, and how to check board support
Some DDR5 modules are labelled CUDIMM. The difference from an ordinary UDIMM is one part - a clock driver on the module - and whether you can use one is decided by the CPU and the board. This guide covers the JEDEC standard names and how to read a motherboard's memory row.
Read guide →CAMM2 and LPCAMM2: the third kind of laptop memory, and what it does and does not tell you about upgrades
Some laptop specification sheets now say LPCAMM2 or CAMM2. It is a third form, neither soldered nor SO-DIMM, and the DDR5 and LPDDR5 versions are not interchangeable. This guide reads JEDEC's standards for the distinction and for what upgradeability actually depends on.
Read guide →Which Storage Spaces resiliency should you choose? Minimum drive counts, and what to check before buying
How many drives to buy is decided by the resiliency you pick. This guide sets out Microsoft's stated minimums (two-way mirror 2, three-way mirror 5, parity 3, or 7 for two failures) and why a USB drive that works in File Explorer may not appear as a candidate at all.
Read guide →When two projector lumen figures can be compared: ANSI and ISO lumens versus "light source" lumens
A 12,000-lumen listing and a 2,700-lumen one from a known brand are often not measured the same way. This guide uses the industry body JBMIA's own list of notations unsuitable for comparison, and shows which exact string to look for on a specification sheet.
Read guide →DDR5 on-die ECC is not ECC memory: how to check whether your CPU and motherboard actually accept ECC modules
"DDR5 has ECC built in, so you no longer need ECC memory" mixes one true fact with a substitution. This guide separates the two, names the exact spec-sheet fields that decide the question, and shows a case where two CPUs from the same generation answer differently.
Read guide →What an HDD's "180TB/year workload" and MTTF actually promise, and how to check your own use
The workload rate and MTTF on a NAS drive's spec sheet are not a lifespan guarantee but two separate numbers with conditions attached. This guide uses the annualization formula the makers publish, so you can put your own drive's SMART figures into it, and compares seven series on one page.
Read guide →When memory integrity refuses to turn on: the incompatible driver, and what to check before buying
Windows Security stopping with "you have an incompatible device driver" is not a fault; it is the feature refusing by design. Microsoft names only three remedies. This guide sets out what each one means, what it costs, and what to look at before adding an older peripheral.
Read guide →How long a home router really lasts: warranty, repair period and firmware support period are three different things
How to decide whether a discounted previous-generation router is a good buy, using the three periods Japanese makers publish. Buffalo, NEC Platforms and Elecom were read on 2026-09-20: each counts from a different starting point, and two of them let you look up the end date for a specific model before you buy.
Read guide →Reading a laptop's MIL-STD-810 tested claim: revision, methods, conditions, and what the warranty actually covers
Reading a laptop's military-standard testing claim against the standard's own Scope in the US DoD ASSIST database. It is not a pass-or-fail certification scheme, the current document on 2026-09-20 is Revision H Change 1 of 2022, and the maker's own footnote puts that kind of abuse outside the standard warranty.
Read guide →A new PC that will not work in Japan: shop returns, maker warranty and the Civil Code claim are three separate routes
Who to contact when a PC bought in Japan fails out of the box, split into three routes. Civil Code articles 562, 563 and 566 were read from the e-Gov statute API, and the warranty terms from dynabook's and NEC's pages, on 2026-09-20. An explanation of the framework, not legal advice.
Read guide →Before buying a laptop with built-in LTE or 5G: checking for the Cellular page in Windows
How to check cellular support before buying a laptop with a built-in modem. From Microsoft's support articles read on 2026-09-20: a Cellular page in Settings decides whether the PC supports it, adding an eSIM profile depends on the Windows version, and an external modem is the route for machines without one.
Read guide →Your DDR5-8000 kit boots at the default speed: XMP, EXPO, CPU rated memory speed and warranty wording
The DDR5-6000 or DDR5-8000 on the box is the speed a profile targets, not the speed the kit boots at. Read Intel's and AMD's published CPU memory speeds, the difference between XMP and EXPO, and the warranty wording each vendor actually prints, then check in that order before buying.
Read guide →Read the NAS drive compatibility list before you buy: what "not listed" costs depends on the model series
Buy a NAS and its drives separately and you may find you cannot create a storage pool with the drive you chose. This guide sets out Synology's published compatibility policy for 2025 and later models by series and drive type, and the order to check things in before ordering.
Read guide →Before buying an imported charger, power strip or power bank in Japan: what the PSE mark has to be accompanied by
The PSE mark is not decoration: Japan's Electrical Appliance and Material Safety Act makes it a condition of sale. This guide reads the Act, its Cabinet Order and its Ministerial Ordinance to show what must be displayed alongside the mark and when a power bank falls in scope.
Read guide →Before you buy a second SSD: the M.2 slots on your board are not interchangeable
On the same board, M.2 slots differ in PCIe generation and lane count, in the SSD lengths they accept, and in whether they work at all with the CPU you installed. Four official motherboard spec pages, read side by side, to show which four lines decide your second drive.
Read guide →Your case says 20Gbps on the front Type-C. Your motherboard may not agree
A case spec sheet that promises a 20Gbps front Type-C port describes the case. What the port actually runs at is set by the internal connector on the motherboard. One case and three boards, read from official pages, and the lines to compare before you buy either.
Read guide →Before moving your wired LAN to 2.5GbE or 10GbE: check the free slot and the cable run first
A 2.5GbE part and a 10GbE card do not ask the same thing of your PC: the PCIe lane width differs, and so does the cabling condition. Two Intel product specification pages, read line by line, and the checks that come before the speed figure.
Read guide →Switching keyboard layouts in Windows: what to set, and the sign-in screen trap
Plug in a keyboard whose physical layout differs from the one Windows is set to and the symbols you get stop matching the ones printed on the keys. Microsoft's own support article and keyboard identifier list, turned into where to set the layout, how to switch it, and what to do when it bites at the sign-in screen.
Read guide →Can you add Thunderbolt to a desktop? Onboard and add-in card need different things
Before buying a Thunderbolt dock or drive, check whether the desktop has a port for it. A board that has it built in and a board that needs an add-in card have different requirements — a dedicated header, a PCIe slot, video fed in, and auxiliary power. Taken from official specification pages.
Read guide →Do you need to buy a TPM module? Discrete, integrated and firmware TPM, and what actually requires one
A TPM header on the motherboard invites you to buy a module. Microsoft states that Windows uses any compatible TPM the same way and takes no position on how one should be implemented. The three implementations, the usual reason a TPM cannot be found, and which features really need one.
Read guide →A laptop that drains in your bag may be behaving as designed: Modern Standby against S3
Battery loss from a closed laptop is not always a failing battery — it can be the power model. Microsoft states that switching between S3 and Modern Standby cannot be done from the BIOS. How the two differ, and the read-only commands that tell you which one you have.
Read guide →Sector size before you buy a drive: 512n, 512e and 4Kn, and what Windows supports
Two drives of the same capacity can differ in sector size, and Microsoft's support policy differs for each kind. The three categories, which Windows versions cover them, and the one command that tells you what you already own.
Read guide →Should the second SSD be a Dev Drive? What can only be decided at format time, and what it trades away
Dev Drive is a Windows 11 volume built on ReFS for developer workloads. Existing volumes cannot be converted — the designation happens only when the volume is formatted. The prerequisites, partition against VHD, and what the default antivirus arrangement actually is.
Read guide →Three ceilings to check before adding memory: your Windows edition, the board, and what is actually usable
More than one ceiling applies when you add RAM. Windows 11 Home stops at 128 GB, each motherboard publishes its own maximum, and installed capacity is never the same as usable capacity. The three, read from the official pages, in the order they bite.
Read guide →Before casting a screen wirelessly: sending and receiving are different features
Putting your PC's screen on a TV and making your PC the destination are two different things. The two sending methods Windows manages behind one identical interface, when it picks each, and what the receiving end actually has to support.
Read guide →A self-encrypting SSD is not automatically an encrypted hard drive for Windows
Microsoft states outright that self-encrypting hard drives and encrypted hard drives for Windows are not the same type of device. What separates them, which conditions apply to the drive, the firmware and the controller, and which editions are listed.
Read guide →NTFS, exFAT or FAT32 for an external drive? Deciding from Microsoft's own comparison
A file that will not copy even though the drive has room is the FAT32 4 GiB limit. This guide reads the limits and the feature differences published in Microsoft's File System Functionality Comparison and turns them into a choice: Windows-only, or shared with other devices. It also shows how to check the format you already have.
Read guide →Camera privacy shutters versus kill switches: why the LED stays on, and what happens to face sign-in
From the design guidance Microsoft publishes for device makers: how shutters and kill switches differ, why the in-use LED stays lit with the shutter closed, why Windows Hello face sign-in will not work while it is closed, and how the infrared camera is treated. What to check before buying, and what actually happens when you close it.
Read guide →Running RGB peripherals without vendor software: how to spot Dynamic Lighting support
Keyboards, mice, case fans, even memory can be driven from Windows Settings instead of one resident app per brand, provided the device implements the HID LampArray standard. Which device classes are in scope, what the Settings page offers, what happens to devices that are not supported, and why moving the USB port makes a device look new.
Read guide →Wake on approach, lock on leave: telling Windows presence sensing from an OEM lookalike
Laptops sold on a human presence sensor split into two kinds: those supported by Windows presence sensing, and OEM implementations that Microsoft states it does not support. How to tell them apart, what the settings offer, how this differs from face sign-in, and what the documents say about privacy.
Read guide →Thunderbolt certified is not Thunderbolt Share licensed: what PC-to-PC sharing actually requires
Thunderbolt Share links two PCs over a Thunderbolt cable for screen and keyboard sharing and file migration. Intel states that Thunderbolt certification and a Thunderbolt Share licence are not the same thing, and that the licence comes only with new products and cannot be bought for hardware you own. What to check before buying.
Read guide →Before dropping in a newer CPU: check the specification for a button that flashes the BIOS with no CPU fitted
A newer-generation CPU that will not produce a picture often needs a motherboard BIOS update first, and updating normally needs a working CPU. ASUS and MSI put a button on some models that breaks that circle by writing the BIOS with no processor fitted. How to tell from the specification whether a board has it, and how the two vendors' procedures differ.
Read guide →16 GB or 32 GB RAM? Choose using your Windows workload
Choosing 16 GB or 32 GB RAM? Check memory use during real work, app requirements and upgrade support before paying for a larger Windows PC configuration.
Read guide →M.2, NVMe and SATA SSDs: check compatibility before upgrading
M.2 does not guarantee SSD compatibility. Compare NVMe and SATA, then check slot support, drive length, clearance and your migration plan before buying.
Read guide →Wi-Fi 6, 6E or 7? Check your Windows PC before buying a router
Compare Wi-Fi 6, 6E and 7 for a Windows PC. Check the OS, adapter, router and current connection before deciding whether new wireless hardware is useful.
Read guide →Choose a USB-C laptop charger: wattage, USB PD and cable support
Choose a USB-C laptop charger by checking the PC’s power requirements, USB PD support, charging port and cable rating. Wattage alone is not enough.
Read guide →Follow the steps
Check PC-Part Compatibility Before Buying: CPU, BIOS, RAM, Case and Power
Check CPU and BIOS support, RAM type, GPU and cooler clearance, and PSU connections before buying PC parts. Verify exact models and configuration limits.
Read guide →Erasing a PC before you sell it: what Windows' "Clean data" claims, and why overwriting an SSD is the wrong tool
Is "Remove everything" enough, and should you overwrite an SSD several times? What each method is said to achieve, separated by source: NIST SP 800-88r2 (September 2025) and Microsoft's own reset documentation.
Read guide →Before you swap in a new SSD: check whether the drive is encrypted, and where the recovery key lives
Windows Device Encryption turns on according to how you signed in, not which edition you bought. Before cloning or replacing a drive, here is how to check whether the drive is encrypted and where the 48-digit recovery key is stored, based on what Microsoft states.
Read guide →Secure Boot certificates expire in 2026: check your PC's state and know what actually stops
Microsoft's 2011 Secure Boot certificates begin expiring in June 2026. A PC that misses the update still starts and still gets Windows updates — what stops is new protection for the early boot process. Where to read your own status, and what each state means.
Read guide →Why Wake on LAN does not wake a shut-down PC: it is the state, not your settings
Remote wake failing after a shutdown is usually not a missed setting. Microsoft states that the default shutdown on Windows 10 and later enters the Fast Startup state, and that Wake on LAN from there is unsupported. Which states it does work from, and the order to check.
Read guide →NAS shares stopped opening after 24H2: SMB signing is now required by default
In Windows 11 version 24H2, SMB signing became required by default for all connections. Microsoft's own documentation says that with non-Microsoft file servers this default can prevent connections. What changed, and what to check first.
Read guide →Before turning on Windows protected print mode: which drivers disappear, and the scanner catch
Turning the mode on uninstalls printers that use third-party drivers and deletes the driver from the driver store. What Mopria certification means, when a scanner stops working, what happens to OneNote, XPS and fax, where the setting lives and how to reverse it.
Read guide →After buying an HDR monitor: the Windows HDR Calibration requirements, and the separate tool for built-in screens
An HDR display does not always look right out of the box. The requirements for the Windows HDR Calibration app (Windows 11, HDR on, full screen, GPU generation, WDDM 2.7 or later), when to use the built-in display feature instead, and how to remove the colour profile it creates.
Read guide →Windows 11: Configure Multiple Monitors and Extended Displays
Set up multiple monitors in Windows 11. Match the display layout to your desk, choose Extend and the main screen, then test movement between displays.
Read guide →How to read pathping loss without blaming a silent intermediate router
Interpret pathping route and loss output alongside destination behavior and a repeatable symptom record.
Read guide →Monitor glare: check window, lamp and desk placement before increasing brightness
Separate reflections from unreadable content, then test window direction, lamps, screen height and text size before buying an anti-glare accessory.
Read guide →Before buying a compact keyboard: plan mouse space and essential keys
Measure usable mouse space and compare compact layouts using number entry, arrow keys, Fn combinations and an optional separate number pad.
Read guide →Choose a vertical mouse by hand fit, handedness and button reach
Evaluate vertical mice using hand size, left or right versions, button reach, pointer speed and desk placement, then compare ordinary work with your existing mouse.
Read guide →Mouse wheel moves another window or jumps too far: check inactive scrolling and line count
Check hover scrolling, lines versus screenfuls and manufacturer settings. Compare applications and distinguish a setting mismatch from persistent reverse-direction wheel input.
Read guide →Cannot adjust external-monitor brightness in Windows: check its buttons and DDC/CI
Check the monitor OSD, picture mode, DDC/CI and a direct connection when Windows brightness does not affect an external display. Preserve settings before any reset.
Read guide →Set up a new empty secondary SSD: GPT initialization and volume creation
Prepare a brand-new secondary SSD for File Explorer. Identify the physical disk, initialize GPT, create a volume, verify a saved file, and recognize situations where initialization is unsafe.
Read guide →Before extending C: check unallocated-space location and separate disks
Read the disk layout before extending a Windows volume. Check adjacent unallocated space, intervening recovery partitions and separate SSDs, then choose a path without casually deleting partitions.
Read guide →Use a separate SSD through a folder: plan and remove a Windows mount point
Assign a separate data volume to an empty folder. Plan the path, check NTFS or ReFS requirements, retain a drive-letter fallback, verify access, and remove the path without deleting the volume.
Read guide →Why a 1 TB SSD shows about 931 GB: reconcile bytes and partitions
Reconcile advertised drive capacity with Windows using decimal and binary units, physical disk size, volume size and free space. Calculate 1 TB and 2 TB examples and identify discrepancies beyond unit conversion.
Read guide →Quick removal or better performance: choose an external-drive operating policy
Choose a Windows external-drive removal policy based on daily use. Find the setting, understand write caching, eject safely, handle a busy device and compare performance under consistent conditions.
Read guide →Check SSD and HDD health: Windows reliability counters and decision limits
Read temperature, errors and wear using Get-StorageReliabilityCounter. Distinguish missing telemetry from normal values, track changes, and combine symptoms with manufacturer diagnostics before deciding what to do.
Read guide →Can NTFS compression free space? Trial a folder, revert and decide on expansion
Trial Windows NTFS compression on a representative folder rather than the whole disk. Compare logical and allocated size, data suitability, task duration and decompression headroom before deciding whether expansion is better.
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