How to Tell If a microSD Card or External SSD Is Fake or Slower Than Advertised
Test a microSD card or external SSD for fake capacity and silent corruption, read the speed ratings that matter, and choose storage you can trust.
Step-by-step fixes, checks, and browser workflows.
Measurements, setup notes, and sound-system fundamentals.
Local-first workflow notes for developers.
Practical ways to handle files and data safely.
How to test peripherals and interpret the results.
Resistor codes, Ohm's law, and battery capacity math.
Guides for testing your hardware properly in the browser, and what the numbers you measure actually mean for your next purchase.
Test a microSD card or external SSD for fake capacity and silent corruption, read the speed ratings that matter, and choose storage you can trust.
Choosing a Hall-effect controller? Check which parts are magnetic, then read raw Gamepad API axis values in your browser to confirm it doesn't drift.
A browser-only checklist for testing dead pixels, backlight bleed, uniformity, USB-C connectivity, and defect documentation on delivery day.
Read memory bandwidth, not TOPS, off a spec sheet, estimate local LLM decode speed, choose an AI PC, then measure it with a benchmark.
Decode Wi-Fi 7 spec sheets, test NAT type, latency and packet loss on your own network, and choose a router that helps gaming and streaming.
Which keyboard specs matter, which claims a browser can verify (key chatter, rollover) and which it cannot (polling rate), and how to choose.
Measure your mouse's actual polling rate locally in the browser before you buy based on an 8000Hz marketing claim.
Which webcam specs predict video-call quality, which are marketing filler, and how to test any webcam in your browser before the return window closes.
Test a new monitor for dead pixels, backlight bleed, ghosting, banding and contrast, then decide to keep, return or claim before the window closes.
Gaming mice, controllers and webcams ship with lab spec numbers. Learn which specs to choose by and how to verify each one in your browser.
Search tools, blog posts and pages…