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Supermicro PWS-351-1H 350W 1U server power supply, silver metal enclosure with fan grille

Supermicro

Supermicro PWS-351-1H 350W 1U server power supply

SKU CH-D9P9-WJF4Q MPN PWS-351-1H

Delivers 350 W across +12 V, +5 V, +3.3 V and +5 VSB rails in a compact 1U form factor with 80 Plus Gold efficiency

  • Max wattage350 W
  • Main power connector24Pin
  • Output current+12 V@29A, +5 V@18A, +3.3 V@15A, +5VSB@3A
  • Key features80Plus gold
  • Product dimensions8.66 in × 3.9 in × 1.57 in
  • 350 W maximum power supports dense 1U server builds
  • 80 PLUS Gold efficiency reduces energy waste and heat
  • 24-pin main connector fits standard server motherboards
  • +12 V rail delivers 29 A for CPU and GPU loads
  • Compact 8.66 × 3.9 × 1.57 in form factor saves rack space

350W 1U server power supply

The Supermicro PWS-351-1H delivers 350W of continuous power in a 1U form factor. It uses a standard 24Pin main connector for compatible server boards. This unit suits administrators who need a direct replacement for 1U racks. It is not for builders who want modular cabling or higher wattage headroom.

80Plus Gold sustained output

Rated 80Plus Gold, the supply maintains efficient conversion across typical server loads. The +12V rail provides up to 29A while +5V and +3.3V rails deliver 18A and 15A respectively. A +5VSB rail supplies 3A for standby functions. Voltage regulation stays within specification during extended operation.

1U installation and clearance

Dimensions of 8.66" x 3.9" x 1.57" match standard 1U bays for tool-less or screw mounting. The fixed cable harness requires routing space behind the chassis. Verify that the 24Pin connector reaches the motherboard without tension. Misaligned screw holes are the most common fitment issue.

How it compares

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

Price $79.99
Cheaper than about 77% of the 3,798 comparable items (median $131.99).
Max wattage 350 W
Lower than about 75% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameSuperMicro
Model namePWS-351-1H
Power
Max wattage350 W
Main power connector24Pin
Output current+12 V@29A, +5 V@18A, +3.3 V@15A, +5VSB@3A
Size & build
Product dimensions8.66 in × 3.9 in × 1.57 in
Shipping weight1.72 kg
Package size312 × 168 × 117 mm

Questions about this item

How loud and hot does the PWS-351-1H get when running at 350 W continuously?

The 80 Plus Gold rating means the supply runs efficiently, reducing waste heat, and the 1U form factor uses a high-speed fan that will be audible under full load.

What connectors or adapters must I already have to install this 24-pin unit in my chassis?

The unit provides a 24-pin main connector and fixed cables for +12 V, +5 V, +3.3 V and +5 VSB rails; any additional GPU or drive power cables must come from your existing harness.

Will the +12 V@29 A output support older drives and expansion cards I plan to keep?

The 29 A on the +12 V rail and 18 A on +5 V match legacy server backplanes, so older SCSI drives and PCI cards that draw from those rails will start reliably.

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