Motherboard for X3500 / X3400 — Parts 44R5619, 42C1549, 43W5176

Replacement motherboard compatible with X3500 and X3400 systems. This mainboard is identified by part numbers 44R5619, 42C1549 and 43W5176. Intended as a direct swap for the original factory board in those models—confirm the part numbers on your existing board to ensure proper fit. If you need further compatibility information, please check system specifications before installation.