The HP ProDesk 400 G4 SFF DDR4 LGA1151 Desktop Motherboard (part numbers 911985-001 and 900787-001) is specifically designed for the HP ProDesk 400 G4 small form factor desktop computer. This motherboard is ideal for upgrading or replacing the existing motherboard in the HP ProDesk 400 G4 to enhance its performance and functionality.
eBay