HP 320W Power Supply Unit | PS-4321-9HA / 503378-001 (4 Pin)

This genuine HP 320W switching power supply unit is manufactured by Lite-On Technology (Model: PS-4321-9HA, HP Part Number: 503378-001, Spare Part Number: 508154-001). Built for HP Compaq Elite and Pro series Microtower/Convertible Minitower desktop systems, it provides stable, high-efficiency power delivery for enterprise desktop hardware.

Key Specifications:

• Brand: HP / Lite-On Technology

• Model: PS-4321-9HA

• HP Part Number (P/N): 503378-001

• HP Spare Part Number: 508154-001

• Serial Number: 00384812

• CT Number: 5ALUP0AM7Y3LRS

• Max Output Power: 320W Max

• Input Voltage: 100–240V ~ 5.5A (50–60Hz)

• Output: +12.1Vmain = 16A, +12.1Vcpu = 11.34A

Connectors:

• 1x 4-Pin CPU Power Connector

• 1x 6-Pin Main Power Connector

• 1x 6-Pin Inline Auxiliary Connector

Condition: Pre-owned OEM pulled from a working HP system. Tested and fully functional. Physical casing is clean with no rust or corrosion.