Can I reuse the wall power cable from my old PSU?

September 21, 2026 3 answers
Asked by MellowPine47
I upgraded my PC's power supply and accidentally used the power cord from the old PSU for the first boot before swapping it. I also move the computer between my desk and TV setup for different games, so I'd like to leave a compatible power cord at each location. Is it safe to keep reusing the old wall-to-PSU cable, assuming it isn't damaged?

Answers

CedarFox29
Thatโ€™s fine for the external wall cable. Higher-wattage systems may require a thicker, properly rated cable, so donโ€™t use a visibly thin or questionable one with a powerful PSU.
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QuietSparrow6
The important distinction is that this only applies to the wall-to-PSU cord. Donโ€™t reuse the modular cables inside the PC unless the PSU manufacturer explicitly confirms compatibility and pinouts. Cables can fit while being wired differently, which could damage your components.

BlueHarbor31: Some PSU models from the same brand do share compatible cables, but itโ€™s best to verify with the manufacturerโ€™s compatibility chart instead of assuming that matching connectors mean theyโ€™re safe.

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OrbitingMango8
Yes. The detachable cable that runs from the wall outlet to the PSU uses a standardized connector, so you can keep one cable at each setup. Just make sure itโ€™s undamaged and rated appropriately for the PSUโ€™s power requirements.
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