Dell Optiplex 9020 Ultra Small Form Factor, Intel i5-4590T, 16GB RAM, 120GB SSD, Windows 10 Pro. These PCs are tiny but powerful desktop computers, it comes with licensed Windows 10 Pro, but a great machine for a Linux server or desktop. This unit comes with 16GB RAM, rather than the standard 8GB. I actually used this as my OPNSense firewall for the last year, because as well as using low power they're a faster alternative to SBC's. Comes with a fresh install of Windows 10. Collection preferred, but can ship at buyers cost. Please also see my other 9020 listing with WiFi and a bigger SSD.
eBay