HPE P38997-B21 1600W Flex Slot Platinum Hot-Plug Power Supply Kit
Overview
The HPE P38997-B21 is a 1600W Flex Slot Platinum-efficiency hot-plug power supply designed for HPE server platforms that support the Flex Slot form factor. Hot-plug capability means the unit can be swapped under live load without taking the server offline — a critical requirement in any environment where planned downtime is unacceptable. The Platinum efficiency rating reduces heat output and operating cost compared to lower-efficiency tiers, which matters when you are running high-density compute around the clock. The low-halogen construction meets RoHS and low-halogen environmental standards, relevant for data centers with material compliance requirements. This is a kit SKU (P38997-B21), meaning it ships as a complete replacement or redundant-pair unit ready for installation.
Compatibility
Compatible with HPE ProLiant and Synergy servers equipped with Flex Slot power supply bays. The Flex Slot architecture is found across multiple HPE server generations including ProLiant DL360, DL380, DL560, DL580 Gen10 and Gen10 Plus, and HPE Synergy 480/660 compute modules, among others. Always verify your specific server's power supply bay count, total power budget, and supported wattage tier against the HPE QuickSpecs for your chassis before ordering — mixing 800W and 1600W units in a redundant pair is not supported on all platforms. For high-core-count or GPU-accelerated configurations drawing sustained power near or above 1200W, the 1600W tier provides the headroom that lower-wattage Flex Slot options cannot.
Installation Notes
Insert the unit into an open Flex Slot bay until the latch engages — no tools required for the swap itself. Confirm the power LED status indicator shows green before removing the old supply in a redundant configuration. The unit weighs 3.00 lb and occupies a standard Flex Slot bay envelope (14.80 × 7.40 × 5.60 in); verify chassis bay clearance if installing in a populated rack with cable management arms in place.
