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Silver rectangular internal power supply unit with rear ventilation grille and side label

DELL

DELL NPS-110AB Power Supply

SKU CH-3ZWE-FBX8V MPN NPS-110AB

Internal proprietary power supply delivering 3.30 V, 5 V, 12 V and -12 V rails for Dell OptiPlex GX110 and GX220 desktops

  • TypeProprietary Power Supply
  • +12V Rails1
  • Delivers stable 12 V power for Dell OptiPlex GX110 and GX220 systems
  • Single +12 V rail design simplifies internal wiring and load balancing
  • Provides 3.30 V, 5 V and -12 V rails to support legacy motherboard components
  • Proprietary Dell form factor ensures direct fit without adapters or modifications
  • New condition guarantees full rated output and reliable long-term operation

Proprietary Dell Power Supply

The DELL NPS-110AB is an internal proprietary power supply designed for specific Dell OptiPlex desktop models. It delivers 3.30 V, 5 V, 12 V and -12 V outputs across a single +12V rail. This unit serves as a direct replacement for the original equipment in compatible systems.

Compatibility and Limitations

This supply suits owners of Dell OptiPlex GX110 or GX220 desktops needing a new OEM-standard unit. Builders working with standard ATX cases or non-Dell motherboards cannot use this proprietary design. Buyers requiring higher wattage or modular cabling for custom builds should look elsewhere.

Single +12V Rail Design

The power supply provides one +12V rail rated at 12 A. This single-rail layout simplifies power distribution for the supported OptiPlex platforms. Verify that your system's 12 V current demand matches this specification before installation.

Highlights

  • Delivers stable 12 V power for Dell OptiPlex GX110 and GX220 systems
  • Single +12 V rail design simplifies internal wiring and load balancing
  • Provides 3.30 V, 5 V and -12 V rails to support legacy motherboard components
  • Proprietary Dell form factor ensures direct fit without adapters or modifications
  • New condition guarantees full rated output and reliable long-term operation

Specifications

BrandDELL
TypeProprietary Power Supply
+12V Rails1

Questions about this item

Which Dell desktop models must I already own for this NPS-110AB supply to fit and power on?

The NPS-110AB is compatible with Dell OptiPlex GX110 and GX220 desktop PCs; it will not fit other chassis or motherboards.

Will the single +12 V rail on this 110 W unit still drive the original GX110 or GX220 components reliably?

Yes — the factory design uses one +12 V rail rated for the full 110 W output, matching the power needs of the OptiPlex GX110 and GX220 systems.

After installation, how can I confirm the NPS-110AB is delivering the correct 3.30 V, 5 V, 12 V and –12 V rails?

Measure each rail with a multimeter at the motherboard connector; readings should sit at 3.30 V, 5 V, 12 V and –12 V within normal tolerance.

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