Refurbished: HP ProDesk 400 G1 MT i3-4130 3.40GHz 16GB 1TB Win 10 Pro 1 Yr Wty - Newegg.com
HP ProDesk 400 G6 i3-9100/8GB/256GB SSD Desktop PC Black| Techinn
HP Business Desktop ProDesk 400 G6 Desktop Computer, Core i3 i3-9100, 4 GB RAM, 256 GB SSD, Small Form Factor, Windows 10 Pro 64-bit, Intel UHD Graphics 630, English Keyboard - WB Mason
HP ProDesk 400 G4 Micro Desktop Intel Core i3 8th gen 16GB RAM 1TB SSD Wi-Fi Windows 11 Pro