HP Prodesk 800 G1 Tower PC Review This USED HP Ultra Small Desktop has been FULLY TESTED. Hp elitedesk 800 g1 usdt intel core i5 4th gen 4gb 320gb hdd windows 10 pro (1) hp elitedesk 800 g1 usdt intel core i5-4570s 2.9ghz 4gb 320gb hdd windows 10 pro. (1) HP Mouse Wired USB. (1) HP Keyboard Wired USB. Tested for Full Functions, R2/Ready for Reuse.