FOR Z220 Workstation SFF Mainboard — Part 655840-001 / 655582-001

Replacement mainboard for Z220 Workstation SFF systems. This listing covers the motherboard with OEM part numbers 655840-001 and 655582-001. Supplied as a direct-fit board for SFF Z220 units — suitable for repairs or system restoration. Please confirm part numbers match your original board before ordering.