Not a Mac

I love using Macs, but I cannot get my desktop to not sleep, and when it sleeps, it disconnects its external hard drive (which is not bus powered, it has a dedicated power supply). The bus-powered SSD (Samsung T7) is fine though. I don’t know if it’s an Apple thing or an ARM64 thing, but I’m looking for a low-end 8th-gen Intel box that’s limited to Win10 to put headless Linux on it, and terminal in from my Mac for server/homelab stuff. Macs are good for Unix type stuff since that’s what they’re based on (since OS X) but they don’t seem too good as servers.

Could be PEBCAK but I dunno.