P38997-B21 - HPE 1600W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit

HPE P38997-B21 — 1600W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit

What it is

P38997-B21 is an HPE Flex Slot power supply kit designed for ProLiant servers and select HPE systems.
It provides 1600 watts of high-efficiency Platinum-rated AC power, supports hot-plug operation, and is built with low-halogen materials for improved safety and regulatory compliance.

Why buyers pick P38997-B21 (plain English)

High-capacity power delivery
1600W output supports high-performance servers and dense configurations with multiple drives, expansion cards, and high-power CPUs.

Platinum efficiency
Platinum efficiency reduces energy waste and lowers heat output and operating costs compared with less efficient supplies.

Hot-plug simplicity
Can be inserted or replaced while the server is running — ideal for 24×7 operations and maintenance flexibility.

Low-halogen construction
Meets safety and environmental standards for reduced halogen content in materials.

Flex Slot compatibility
Fits HPE Flex Slot systems with supported chassis, allowing flexible power configurations and redundancy.

60-second spec box (P38997-B21)

Power supply type
Flex Slot power supply kit

Output capacity
1600 watts

Efficiency rating
Platinum

Input
AC power (auto-ranging)

Hot-plug
Yes

Construction
Low-halogen materials

Form factor
Flex Slot

Use case
High-performance server power, hot-swap maintenance, and energy-efficient operation.

Where it fits (and when to choose something else)

Perfect for:

• ProLiant servers with Flex Slot power shelves

• High-density compute configurations

• Redundant power supply deployments

• Data centers needing energy-efficient infrastructure

Choose something else if:

• You need lower capacity → 800/1200W Flex Slot supplies

• You need DC power → DC PSU alternatives (if supported)

• Your server doesn’t use Flex Slot → platform-specific PSUs

TL;DR

P38997-B21 is HPE’s 1600W Platinum Flex Slot hot-plug power supply kit:
a high-efficiency, high-capacity PSU built for demanding ProLiant server environments with hot-swap capability and low-halogen design.