P03178-B21 - HPE 1000W Flex Slot Titanium Hot Plug Power Supply Kit

HPE P03178-B21 — 1000W Flex Slot Titanium Hot-Plug Power Supply Kit

What it is

P03178-B21 is an HPE 1000W Flex Slot Titanium hot-plug power supply kit used in HPE ProLiant enterprise servers that support the Flex Slot PSU architecture. It delivers high-efficiency power and supports hot-swap replacement and redundant configurations for production environments.

Why buyers pick P03178-B21 (plain English)

High power capacity: 1000W is strong enough for heavily loaded servers with multiple CPUs, lots of memory, and many drives.

Titanium efficiency: top-tier efficiency lowers wasted power and heat compared with lower efficiency classes.

Flex Slot standard: works in many modern ProLiant Gen10 / Gen10+ / Gen11 servers with Flex Slot PSU bays.

Hot-plug replacement: swap the PSU without powering down the server (when redundancy is present).

Redundancy ready: install paired units for 1+1 power resiliency.

60-second spec box (P03178-B21)

Power output

• 1000 Watts

Efficiency rating

• Titanium (highest efficiency class for server PSUs)

Form factor

• HPE Flex Slot

Installation

• Hot-plug / hot-swap

Compatibility

• HPE ProLiant servers with Flex Slot PSU architecture

Where it fits (and when to choose something else)

Perfect for:

• High-performance ProLiant servers

• Systems with heavy memory, CPU, or drive loads

• Adding redundant power for uptime-critical systems

Choose something else if:

• Your server only needs lower wattage → 500W / 800W / 1200W options

• Your platform uses non-Flex Slot PSUs

TL;DR

P03178-B21 is an HPE 1000W Flex Slot Titanium hot-plug PSU kit — high-efficiency, hot-swap power for enterprise ProLiant servers.