HPE 800W Flex Slot Platinum HOT Plug LOW Halogen Power Supply KIT Input Voltage - P38995-B21

HPE P38995-B21 800W Flex Slot Platinum Hot-Plug Power Supply Kit

Overview

The P38995-B21 is an 800W Flex Slot Platinum-efficiency hot-plug power supply designed as a direct field-replacement or redundancy upgrade for HPE ProLiant servers. Hot-plug capability means you can swap or add this unit while the server stays online — critical in production environments where any unplanned downtime carries a real cost. The Platinum efficiency rating reduces heat output and operating costs on 24/7 workloads. Low-halogen construction meets environmental compliance requirements for deployments in jurisdictions or facilities with restrictions on halogenated materials. This is a kit SKU (P38995-B21), meaning it ships as a complete replacement unit ready for installation without sourcing additional hardware separately.

Compatibility

Designed for HPE ProLiant servers with a Flex Slot power supply bay. Compatible families include HPE ProLiant DL360 Gen10, DL380 Gen10, DL560 Gen10, ML350 Gen10, and other Gen10/Gen10+ platforms that support the Flex Slot form factor and an 800W input rating. Verify your specific chassis power bay count and total power budget before installing — some configurations require matched PSU wattage across all slots for redundancy to function correctly. Consult the HPE QuickSpecs document for your server model to confirm P38995-B21 is listed as a supported option.

Installation Notes

Hot-plug insertion requires the chassis to already be powered and running a compatible HPE firmware revision. The unit weighs 2.90 lb and the kit dimensions are 14.80 x 7.40 x 5.70 in — confirm adequate rack clearance and airflow path before installation. No additional tools are required for the power supply swap itself; the Flex Slot bay uses a tool-free latch mechanism standard across the Gen10 platform.