Power supply HP P S Libra 180W SFF EPA85 Delta (MPN 906189-003)

Internal power supply unit designed for small form factor HP desktops, providing 180 watts of continuous power. The unit fits compact chassis that require an EPA85-compliant Delta electronics configuration and restores stable power delivery for office and home systems. It is intended as a direct replacement for faulty or aged power supplies to maintain system reliability and proper operation of internal components.

Advantages

The power supply delivers a rated 180 W output in a compact SFF housing, allowing consistent performance in space-constrained desktop systems. Built to meet EPA85 electrical characteristics for Delta-style electronics, the unit supports regulated voltages and protection features commonly required by HP small form factor designs. Installation of this internal PSU helps reduce downtime by replacing failing components with a unit engineered for the same electrical and physical fit.

Suitable for

• Small form factor HP desktop systems requiring a 180 W internal PSU
• Replacing faulty or unstable power supplies to recover system functionality
• Office and home desktop environments where compact power solutions are needed
• Maintenance and repair tasks on HP systems that specify EPA85 Delta-compatible electronics

Key specifications

• Output power: 180 watts (continuous)
• Form factor: internal, small form factor (SFF) compatible
• Design: Delta electronics compatible with EPA85 electrical profile
• Voltage regulation: multiple internal rails providing stable supply to motherboard and peripherals
• Cooling: integrated fan and airflow design suited for compact chassis
• Protection features: built-in overcurrent and short-circuit protection (typical for OEM PSUs)

How to use

Power off the computer and disconnect all external cables before beginning. Open the SFF chassis following the manufacturer's service manual, remove the existing power supply by disconnecting internal connectors from the motherboard and drives, and unscrew any mounting fasteners. Install the replacement unit in the same orientation, secure it with the original screws, and reconnect all internal power connectors to the motherboard and storage devices. Close the chassis, reconnect external cables, and power on the system to verify normal operation and that all peripherals receive power.

Recommendations

Handle the unit in an electrostatic discharge-safe environment and ensure compatibility with your specific HP chassis model before installation. Verify connector types and cable lengths are suitable for your system layout. If uncertain, consult HP service documentation or a qualified technician to confirm fit and electrical compatibility.