Originally Posted by
SBR249
It's been a while since I've had a desktop PC but I distinctly remember that my old desktop's power supply had a manual toggle that you flipped depending on the input voltage. This was pretty standard from my experience.
Well, standard if you bought an off-the-shelf consumer desktop.
If you built you own or bought a more power-efficient business model, a power supply unit with active power factor correction is the norm. It automatically detects input voltage and adjusts accordingly. Units without active PFC are vastly inferior in terms of durability and realiability (not just of the PSU itself, but the risk of frying other components is also much higher without active PFC).
Originally Posted by
Kosta Souliotis
I don't know if I can just swap out my UK cord for a US one.
Yes, you can just get a new cord.
Also see my comments above. If your desktop has a cheap PSU with passive PFC, there'll be a small switch on the back of the PSU which you need to move to 115 V. If there's no such switch, the PSU features active PFC and you're good to go.