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Rectangular silver PSU unit with 20+4 pin and 4 pin cables visible

Ruth's sister

Ruth's sister DPS-320NB-1 internal power cable

SKU CH-0ENR-ZQ95V

A 320 W ATX power supply for compatible server models with 20+4 pin and 4 pin CPU connectors

  • 320 W output powers compatible 6000 & 8000 Series servers
  • 100–264 V input handles global mains without a switch
  • 20+4 pin ATX plus 4-pin CPU and 6-pin connectors cover key rails
  • 90 mm fan in 15 × 9.9 × 15.4 cm chassis fits standard bays
  • Validated for 4000, 4300, 6000–6380 and 8000–8380 model families

Product Identity

The Ruth's sister DPS-320NB-1 is a 320 Watt internal power supply designed for specific server chassis. It targets administrators maintaining compatible HP 4000, 6000 and 8000 series systems requiring a direct replacement unit.

Decisive Specification

The unit provides a 20+4 pin main connector alongside one 4-pin CPU connector and one 6-pin peripheral connector. This exact connector layout determines whether the unit matches the motherboard and backplane power requirements of the target server model.

Build Integration

Measuring approximately 15 x 9.9 x 15.4 cm with a 90 x 90 mm fan, the PSU fits the standard form factor of the listed server series. It accepts 100-264V input voltage, freeing the builder from sourcing a region-specific power cord for supported hardware.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $48.99
Pricier than about 82% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What does the 320 W rating mean for a server build?

The unit is rated at 320 W continuous output, placing it in the 301 W – 400 W power band for typical server workloads.

How does the 20 + 4 pin ATX connector limit compatibility?

The 20 + 4 pin ATX interface fits standard ATX motherboards but will not connect to proprietary server power backplanes that require a different pinout.

Will the 15 cm × 9.9 cm × 15.4 cm enclosure fit in a 6000 series chassis?

Yes, the dimensions match the form factor used in 6000 and 8000 series servers, and the 90 mm × 90 mm fan aligns with the standard mounting points.

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