Mainboard for X3400 / X3500 M2 — Part 46D1406 / 81Y6002

Replacement mainboard compatible with X3400 and X3500 M2 servers. This listing covers the exact part numbers 46D1406 and 81Y6002 for use as a direct swap in your X3400/X3500 M2 chassis. Ideal as a spare or repair part — confirm the part number on your existing board to ensure compatibility before ordering.