If you built the PC yourself or bought it from a site like Newegg or Amazon, check your email receipts or order history.
Unlike nearly every other component in a Windows 10 system, the power supply unit remains “invisible” to the operating system. The only definitive way to identify your PSU is through physical inspection of the unit itself or, in the case of prebuilt systems, through original purchase documentation or the manufacturer’s support site. Third-party software can provide voltage readings but cannot report brand or wattage. Users requiring PSU identification for upgrades or troubleshooting should plan to open their computer case and read the specification sticker directly. how to see what power supply i have windows 10
The only way to be 100% sure of your PSU's specifications is to look at the sticker on the unit itself. If you built the PC yourself or bought
wmic csproduct get name powercfg /batteryreport wmic memorychip get manufacturer Third-party software can provide voltage readings but cannot
Locate the PSU—usually a large metal box at the top or bottom rear of the case.
| Method | Reliability | Requires Opening Case | Provides Model/Wattage | |--------|-------------|----------------------|------------------------| | Physical inspection | 100% | Yes | Yes | | Original documentation | High (for prebuilts) | No | Yes (partial) | | Digital PSU software | High (compatible units only) | No (if cable already connected) | Yes | | HWiNFO64 / Open Hardware Monitor | None for identification | No | No | | PowerShell / CMD | None | No | No |
Remove the side panel of your computer case (you may need a screwdriver).