Description
HP 230993-001 PS-5551-2 500W Hot-Plug Power Supply ESP115 ML370 Server
The HP PS-5551-2 is a 500W hot-plug redundant power supply from HP's ESP115 series, designed for the ProLiant ML370 server line. It supports active power factor correction (PFC) and a wide-range AC input, allowing it to be swapped in or out of a running server without taking the system down — a key feature in enterprise and data-center environments where uptime is critical.
Specifications & What's Included
- Manufacturer: HP (Hewlett-Packard)
- Model: PS-5551-2
- Spare Part Number: 230993-001
- Assembly Part Number: 216068-002
- Series: ESP115
- Total Output Power: 500W
- Power Factor Correction: Active PFC
- Input Voltage: 100–120V / 220–240V AC (auto-ranging)
- Input Current: 8A @ 100–120V / 4A @ 220–240V
- Input Frequency: 50–60Hz
- Output +5.125V: 34A
- Output +3.3V: 40A
- Output +12.05V: 30A
- Output −12V: 1A
- Output +5Vaux: 5A
- Efficiency: Level 5
- Cooling: Dual Nidec fans (integrated)
- Hot-Plug: Yes — can be swapped under power
- Connector: Proprietary multi-pin blade/edge backplane connector
- AC Inlet: IEC C14
- Hardware Revision: REV:04
- Country of Manufacture: China
- Compatible with: HP ProLiant ML370 series (replaces Compaq PS-5551-2)
Applications
The HP ProLiant ML370 is a tower/rack-convertible server from the early-to-mid 2000s that was widely deployed in business data centers, branch offices, and enterprise IT environments running Windows Server, Linux, and NetWare. Hot-plug redundant power supplies like this PS-5551-2 allow a failed PSU to be replaced while the server stays online, supported by a second PSU in the redundant bay. This unit is a direct spare or replacement for any ML370 system currently in service, and it is also compatible with legacy Compaq ProLiant server configurations that used the same PS-5551-2 platform. Organizations maintaining older ML370 infrastructure — common in industrial, government, and education settings where equipment lifecycles run long — rely on spares like this to avoid costly system replacements.
This HP PS-5551-2 (230993-001) 500W Hot-Plug Server Power Supply has been bench-tested at our facility and is in good working condition. The unit powers on normally. Cosmetically it shows typical wear for used server equipment — minor scuffing on the chassis and light marks consistent with rack service. Both Nidec cooling fans are present and intact. Please review our photos for a full look at the unit's condition, and contact us with any questions.
Warranty Information
Additional Information
Brand: |
HP |
Model: |
PS-5551-2 |
MPN: |
230993-001 |
Secondary Model: |
216068-002 |
Series: |
ESP115 |
SKU: |
41582 |
Type: |
Hot-Plug Server Power Supply |
Power Output: |
500W |
Power Factor Correction: |
Active PFC |
Input Voltage: |
100-120V / 220-240V AC, 50-60Hz |
Input Current: |
8A / 4A |
Output +5.125V: |
34A |
Output +3.3V: |
40A |
Output +12.05V: |
30A |
Output -12V: |
1A |
Output +5Vaux: |
5A |
Efficiency Level: |
Level 5 |
Hot-Plug: |
Yes |
Compatible With: |
HP ProLiant ML370 Series |
Form Factor: |
Hot-Plug Module |
Connector: |
Proprietary blade/edge server connector |
Cooling: |
Dual Nidec fans (built-in) |
Country/Region of Manufacture: |
China |
Hardware Revision: |
REV:04 |
Seller Notes: |
Spare No. 230993-001; replaces Compaq PS-5551-2. Bench-tested at our facility. |
Condition Notes: |
This HP PS-5551-2 230993-001 500W hot-plug server power supply has been bench-tested at our facility and is in good working condition. Minor cosmetic wear consistent with rack use. Both fans present and intact. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
