Power Supplies
Power Supplies covers replacement units for servers, network switches, storage arrays and desktops. Server supplies from Delta, Lite-On and Artesyn fit ProLiant DL380, Gen10 Flex Slot, PowerEdge R620, R720, R710 and C-series systems. Switch supplies include PoE+ units for the 5400R and supplies for FlexNetwork 5130 and FlexFabric 12900E chassis, while 3PAR 8000 and Alletra 6000 arrays have their own. ATX supplies such as Cooler Master's MWE 850 cover desktop builds.
- 12,422 parts
- Free U.S. ground shipping on in-stock parts
Power Supplies: 12,422 products
Buying guide
Choosing a replacement power supply
Match the slot
Server power supplies are specific to the platform and generation. HPE Gen8 Common Slot and Gen9 and Gen10 Flex Slot supplies, for example, are not interchangeable.
Keep pairs identical
In a redundant pair, use the same wattage and efficiency rating in both bays.
Size for the load
Size the wattage for the fully configured load: processors, memory, drives and add-in cards.
Check the input voltage
Higher-wattage units often need 200–240V input to deliver their full rating.
Use the part number
The part number printed on the label of the supply you are replacing is the safest way to order an exact match.
Power Supplies
Frequently asked questions
Can I hot-swap a failed power supply?
In servers and switches with redundant hot-plug supplies, yes: the remaining supply carries the load while you swap the failed one. Systems with a single fixed supply have to be powered down.
What do 80 PLUS Platinum and Titanium ratings mean?
They certify efficiency at set loads. At half load a Platinum supply converts roughly 92 to 94 percent of its input to usable power and a Titanium supply roughly 94 to 96 percent, depending on input voltage, so less is lost as heat.
Do PoE switches need bigger power supplies?
Yes. PoE power comes out of the switch's own supply, so modular switches like the 5400R use higher-wattage PoE+ supplies, and a second supply can add PoE budget as well as redundancy.
