The HPE P21139-B21 (spare part number P22635-001) is an 800W Flex Slot Titanium Hot Plug Power Supply Unit designed for HPE ProLiant Gen10 and select Gen10 Plus servers. Offering up to 96% energy efficiency, this Titanium-certified PSU is ideal for data centers that prioritize performance and lower energy consumption. Its Flex Slot design ensures compatibility with multiple HPE servers while supporting easy hot-swappable installation to minimize downtime during maintenance or upgrades.
TECHNICAL SPECIFICATIONS Power Output: 800 Watts Input Voltage: 100–240V AC Efficiency: 96% (Titanium-certified) Form Factor: Flex Slot Hot-Swappable: Yes Option Kit Part Number: P21139-B21 Spare Part Number: P22635-001 Compatibility: HPE ProLiant Gen10 / Gen10 Plus Servers Dimensions: Approx. 8.15 x 2.17 x 1.57 in (207 x 55 x 40 mm) Weight: Approx. 2.2 lbs (1 kg)