Can confirm. Had the OG XBOX (Still somewhere in a Box). I installed a modchip and Linux. That beast could practically run anything like a PC. I upgraded the HDD to about 200GB back then. You could just throw in a game and make a backup on your HDD. The Controllers were basically USB Controllers with a different connector. Good times. IMHO the OG XBOX was the pinnacle of moddable consoles. Everything started to decline when the consoles began to be online 24/7 and games started to be unplayable out of the box without TBs of updates… Oh, also you actually owned your disc back then.

Not with any pci-e expansion sockets. I’m not even sure it could address a proper pci-e GPU.