We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver rectangular server power supply unit with rear exhaust grille and pull handle

HPE

HPE 656363-B21 750W Common Slot Platinum Plus server power supply

SKU CH-PNV6-NNM66

Delivers 750W with 94% efficiency and hot-plug, tool-less installation for HP server and storage solutions

  • Max wattage750 W
  • Product typePower Module
  • 94 % efficiency cuts energy waste
  • 750 W output powers demanding server workloads
  • Hot-plug design enables tool-less replacement without downtime
  • Common Slot form factor fits multiple HPE server and storage platforms
  • Up to 60 W saved per server lowers data-centre power draw

750W Common Slot Platinum Plus power supply

The HPE 656363-B21 is a 750W hot-plug power module designed for HP server and storage platforms that use the Common Slot form factor. It targets data-centre operators who need to right-size power capacity for specific configurations without stranding unused wattage. The unit supports tool-less insertion and removal while the system remains running. It is not suited for desktop PCs or non-HPE chassis that lack the Common Slot bay and backplane.

94% efficiency and thermal performance

CS Platinum Plus units deliver 94% efficiency, reducing per-server draw by up to 60W and cutting overall data-centre power demand by up to 10% versus earlier G6-era estimates. High efficiency lowers waste heat, easing the cooling burden on shared airflow paths. The hot-plug design allows replacement without shutdown, maintaining thermal continuity across the enclosure. No acoustic or fan-speed figures are provided by the manufacturer.

Hot-plug integration and right-sizing

The supply shares a common electrical and physical interface with other Common Slot modules, enabling hot-swap, tool-less installation in compatible HPE server and storage solutions. Multiple efficiency and input/output variants let administrators match capacity to actual load, freeing stranded power for other equipment. It requires a chassis with a Common Slot bay and supporting backplane. Builders using proprietary or ATX form factors cannot use this module.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $29.99
Cheaper than about 93% 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 nameHP
Product typePower Module
Power
Max wattage750 W

Questions about this item

How do I install the 656363-B21 power supply into an HP server?

Slide the unit into a Common Slot bay until it clicks; the hot-plug design requires no tools and no cable routing inside the chassis.

What maintenance will the 750W Common Slot Platinum Plus supply need over time?

Keep the front intake clear of dust; the hot-plug design lets you swap the entire unit without shutting down the server.

What limit appears first when the 750W supply runs at full load continuously?

The 750W maximum power rating is the first constraint; efficiency reaches 94% at typical loads, reducing waste heat.

More in Server & Hot-Plug PSUs

Similar items