How To Tell Power Supply Wattage Jun 2026

But the lights in your room stayed on. The monitor’s standby light blinked patiently. That’s when you started to suspect: the heart of the machine was failing.

Turn off the PC and flip the switch on the back of the power supply to the "O" (off) position. For safety, unplug the cable from the wall. how to tell power supply wattage

Take a flashlight. Look for a model number sticker on the side of the PSU casing. It will look something like PS-SPR-650 or RMX-850 . But the lights in your room stayed on

It is the large metal box where the power cord plugs in. Turn off the PC and flip the switch

💡 If your PSU is hidden by a "shroud" (a metal cover at the bottom of the case), you may need to open the opposite side panel to see the label. 2. Look Up Your Model Number

Shutdown. Silence. The machine protecting itself from you.