Help
Frequently asked questions
Everything people usually ask before using the tools on this site. Still stuck? Write to us on the feedback page.
Using the references
Can I trust a pinout without checking it?
No. Every pinout here comes with a measurement that confirms it, and you should still check the datasheet for your exact part and board revision before applying power. Pin 1 conventions and board revisions differ, and a wrong pin can destroy equipment.
Where do the power figures come from?
CPU and GPU figures are manufacturer-rated peak values; drives, fans and boards are typical approximations. Measure your own build with an inline wattmeter and enter the result as a custom figure for the real answer.
Safety
Is it safe to test a power supply on the bench?
Only through its output connectors and never with the casing open: mains-side capacitors can hold a charge after unplugging. The guides on this site list the steps and the tools needed.
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