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Supermicro 650W 80 Plus Gold 2U server power supply unit

Supermicro

Supermicro 650W 80 Plus Gold 2U server power supply

SKU CH-R16A-A27KX

Server power supply delivering 650 W with 80 Plus Gold efficiency for 2U systems

  • TypeATX12V / EPS12V
  • Maximum PowerPWS-653-2H
  • Input Voltage110 V AC 220 V AC
  • Features80 Plus Gold
  • 80 Plus Gold efficiency lowers running costs
  • 650 W output powers demanding server workloads
  • Dual 110 V and 220 V AC input suits global racks
  • ATX12V and EPS12V design fits standard 2U chassis
  • SATA adapter included for slim optical drives

650W 80 Plus Gold server power supply

This Supermicro unit delivers 650 watts of continuous power with 80 Plus Gold efficiency. It is built for 2U rack-mount servers that require reliable, high-efficiency operation in multi-node or storage-dense environments.

Redundant hot-swap installation

The supply slides into a compatible 2U chassis bay and locks with a thumbscrew for tool-less replacement. Misalignment of the rear connector is the most common issue; ensure the unit seats fully before tightening to avoid intermittent power faults.

Check chassis bay and voltage input

Verify your server chassis accepts this specific 2U redundant form factor and provides the correct backplane connector. The unit auto-ranges across 110 V AC and 220 V AC inputs, so confirm your facility power matches one of these nominal voltages.

Highlights

  • 80 Plus Gold efficiency lowers running costs
  • 650 W output powers demanding server workloads
  • Dual 110 V and 220 V AC input suits global racks
  • ATX12V and EPS12V design fits standard 2U chassis
  • SATA adapter included for slim optical drives

Specifications

BrandSuperMicro
Series80 Plus
TypeATX12V / EPS12V
Maximum PowerPWS-653-2H
Input Voltage110 V AC 220 V AC
Features80 Plus Gold

Questions about this item

How can I verify the 650W unit is delivering stable power after installation?

Check that the 80 Plus Gold efficiency rating is met by monitoring input draw at 110 V AC or 220 V AC under load.

What comes with the 2U server power supply and what must be sourced separately?

The supply includes the 650W module; ATX12V/EPS12V cables and mounting rails are not included.

Which capacity should I choose for a dual-CPU build needing 12 V rail headroom?

The 650W model (PWS-653-2H) provides the 12 V output required for dual-processor configurations.

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