IH81M V1.0 Mainboard — Replacement Motherboard for M73, M4500, B455, M4600, M4600n-10

Replacement IH81M V1.0 motherboard/mainboard compatible with M73, M4500, B455, M4600 and M4600n-10. Supplied as a direct-fit mainboard for the listed models, this IH81M V1.0 board is intended for repairs or refurbishments of units that use these exact model series. Please verify connector layout and mounting points against your original board to ensure compatibility before installation.