Product Description
HP 4421S 4420S 4321S 4320S INTEL HM55 Motherboard 599522-001
HP P/N: 599522-001
Description: System board (motherboard) - For model with INTEL CPU DDR3 RAM and HM55 Chip independence motherboard
System board (motherboard) - For use with models that have discrete graphics subsystems and 14.0-inch displays - Includes replacement thermal material