550W Power Supply Compatible with Z2 / 800 / 880 Workstations G4 | G5 | G6 — PA-5551-1HA / PA-5551-1HB (L75200-001)

Replacement 550W power supply designed for HP Z2, Z800 and Z880 workstation families across G4, G5 and G6 generations. This unit corresponds to OEM part numbers PA-5551-1HA, PA-5551-1HB and L75200-001, ensuring compatibility with the listed systems. Use it to replace a failing or damaged power module and restore system power. Confirm compatibility with your chassis model before installation; professional installation is recommended if you are not experienced with workstation hardware.