Power Supply Unit HPE P38995-B21 800 W

The HPE P38995-B21 800 W power supply unit delivers 800 watts of total power with an AC input voltage range of 100–240 V. Its compact housing, with dimensions 190.5 mm (W) × 323.8 mm (D) × 101.6 mm (H) and a weight of 1.43 kg, is designed to fit professional rack and server environments. The unit is finished in grey and is intended for integration into compatible HP Enterprise systems and similar installations that require a reliable AC-fed power source.

Advantages

This power supply provides a consistent 800 W output across a wide AC input range, supporting deployments that experience variable mains voltages. The compact dimensions and moderate weight simplify installation and replacement in constrained equipment bays. The neutral grey colour and standardized form factor make it suitable for professional IT environments where space efficiency and serviceability are important.

Suitable for

• Server and rack-mounted systems requiring an 800 W AC-fed power module
• Data center equipment replacements and spare inventory
• Professional IT environments with standard 100–240 V mains
• Systems where a compact, serviceable PSU form factor is required

Key specifications

• Total output power: 800 W
• AC input voltage range: 100–240 V
• Dimensions (W × D × H): 190.5 mm × 323.8 mm × 101.6 mm
• Weight: 1.43 kg
• Color: Grey

How to use

Install the unit into the appropriate power bay or chassis following the host system manufacturer’s service instructions. Ensure the host system is powered down and disconnected from mains power before removing or inserting the power supply. Confirm correct seating and any required locking or retention mechanisms, then reconnect AC power within the specified 100–240 V range and power on the system. Observe system indicators and logs to verify the supply is recognised and operating normally.

Recommendations

Use this unit as a direct replacement or spare for compatible HP Enterprise systems. Verify compatibility with the specific server or chassis model before installation, and maintain proper airflow and ambient temperature limits as specified by the host system to ensure reliable operation.