500W Power Supply for HP 280 288 480 600 680 800 400 G3 G4, Replacement for L77487-001 L89233-001 PA-5501-2HA PCG007

Aomoproing 500W power supply is a premium OEM-grade replacement built exclusively for HP ProDesk and EliteDesk 280, 288, 400, 480, 600, 680, and 800 G3/G4 series Microtower (MT) desktops. It precisely matches the original HP form factor, connector layout, and electrical specifications to ensure seamless compatibility and installation.

It fully replaces the following HP OEM part numbers: L77487-001, L77487-003, L89233-001, PA-5501-2HA, PCG007, and DPS-500AB-51A. The unit features the proprietary 7-pin main motherboard connector, a 4-pin 12V CPU power connector, and a 6+2-pin PCIe power connectorcritical for supporting mid-range graphics card upgrades.

Built with high-quality components and 80 PLUS Gold certified efficiency, this 500W PSU delivers stable, clean power with robust +12V rail performance. It supports universal 100-240V AC input (50/60Hz) and active Power Factor Correction (PFC) for global use and optimal energy savings.

Every unit undergoes 100% load testing before shipment to ensure voltage stability and flawless operation. It includes comprehensive safety features: Over-Voltage (OVP), Over-Current (OCP), Short-Circuit (SCP), and Over-Temperature (OTP) protections to safeguard your motherboard, CPU, and peripherals. The integrated low-noise cooling fan provides efficient heat dissipation while maintaining quiet operation.

This power supply is the ideal upgrade or replacement for aging or faulty units in your HP G3/G4 business PC. It offers OEM-level quality, supports discrete GPU upgrades, and ensures reliable performance for demanding workloads.