HP 636673-B21 750W -48V Platinum server power supply
A 750W hot-plug server power supply with -48V input and 94% Platinum efficiency for compatible ProLiant systems
- Max wattage750 W
- Power efficiency94%
- Power supply redundancySingle
- Key featuresHP 750 W Common Slot -48VDC Hot Plug Power Supply Kit Platin
- 94% Platinum efficiency reduces data-centre energy costs
- Hot-plug, tool-less design enables rapid replacement without downtime
- Common Slot architecture fits multiple ProLiant DL160 and DL360 servers
- 750 W -48 V DC output matches telecom and high-density rack requirements
- 80 Plus Platinum certification confirms 94% peak efficiency at typical loads
750W -48VDC server power supply
This HP Common Slot power supply delivers 750W from a -48VDC input with 94% Platinum efficiency. It uses a hot-plug, tool-less form factor designed for quick replacement in supported HP ProLiant servers. The single-unit design fits directly into compatible Common Slot bays without cables or trays. It helps reduce data-centre energy waste by right-sizing power to the server configuration.
Suited for -48VDC racks, not AC environments
This unit suits operators running -48VDC power distribution who need Platinum-efficiency hot-swap supplies for ProLiant DL160 or DL360 series servers. It is not for buyers whose racks deliver AC mains voltage or who require redundant power modules in a single chassis. Teams needing higher wattage per slot or different input voltages should look at other Common Slot options.
94% Platinum efficiency at 750W
The 94% efficiency rating is the key figure that determines whether this supply meets your thermal and operating-cost targets. At full 750W load it wastes roughly 60W less than lower-rated units, cutting per-server heat and overall facility draw. If your deployment cannot accept that loss level or your budget demands a lower efficiency tier, this model will not match the requirement.
How it compares
Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.
- Price $315.99
- Pricier than about 84% of the 3,798 comparable items (median $131.99).
- Max wattage 750 W
- Higher than about 60% of the 235 comparable items (median 668 W).
New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.
Specifications
| Product | |
|---|---|
| Brand name | HP |
| Model name | 636673-B21 |
| Power | |
| Max wattage | 750 W |
| Power efficiency | 94% |
| Power supply redundancy | Single |
| Size & build | |
| Shipping weight | 1.81 kg |
| Package size | 229 × 127 × 76 mm |
Questions about this item
Will the 636673-B21 750W unit fit the same Common Slot bay and share power with existing ProLiant DL160 or DL360 supplies?
Yes, it uses the HP Common Slot form factor so it slides into the same hot-plug bay as other CS supplies in DL160 and DL360 servers, enabling tool-less, hot-swap installation alongside them.
How can I confirm the -48 VDC input is delivering the rated 750 W at 94 % efficiency after installation?
The server iLO or Onboard Administrator will report input voltage, output wattage and the 80 Plus Platinum 94 % efficiency rating once the supply is seated and powered.
Does the kit include the -48 VDC input cable or only the hot-plug power supply module?
The kit contains the 750 W hot-plug power supply module; the -48 VDC input cable is sold separately for your specific DC source.
More in Server & Hot-Plug PSUs
Similar items
HP 720479-B21 800W Flex Slot Platinum Hot Plug Power Supply
- Consumer Electronics
Athena Power AP-U1ATX30A 300W 1U server power supply
- 300 W
- Single
Matrix MPS-301 20V 6A 120W Linear DC Power Supply
- 120 W
- MATRIX MPS-301 20 V…





