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Dell Optiplex 980 MT 305W power supply unit silver metal enclosure

DELL

DELL Optiplex 980 MT Power Supply 305W K345R

SKU CH-4JMY-XMCJS

Replacement 305W power supply for Dell Optiplex 980 Mini Tower systems

  • Genuine Dell replacement for Optiplex 980 MT
  • 305 W output matches original specification
  • New condition — never installed in a working system
  • Multiple part-number cross-reference ensures correct fit
  • Mini-Tower form factor fits the intended chassis

Dell Optiplex 980 MT Power Supply 305W

This replacement power supply delivers 305 watts for the Dell Optiplex 980 Mini Tower. It is a new unit sourced from new systems or unused old stock. The part is identified by Dell part number K345R and matches several cross-referenced numbers including K346R, M177R, J775R and PS-6311-2DF2-LF. It is built specifically for the Mini Tower chassis form factor.

Verify Mini Tower Chassis Before Purchase

This power supply fits only the Mini Tower version of the Optiplex 980. It will not install in Small Form Factor, Desktop or Ultra Small Form Factor variants of the same model. Confirm your chassis is the Mini Tower type before ordering. Check the existing unit label for part numbers such as K345R, K346R, M177R, J775R, F305P-00, L305P-00 or H305P-00 to ensure an exact match.

Steady 305 Watt Output for Continuous Operation

The supply provides a continuous 305 watt rating suitable for sustained workloads on the Optiplex 980 platform. It is designed to maintain stable voltage rails during extended use in office or managed environments. The unit replaces the original factory power supply without modification. Long-term reliability is supported by Dell OEM specifications for this chassis.

How it compares

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

Price $126.99
Typical for this category: the median of 3,798 items is $131.99.

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Specifications

No published specifications for this item yet.

Questions about this item

Does the power supply ship with the mounting screws and power cables, or do I need to source them separately?

The unit is supplied as the power supply only; mounting screws and cables are not included and must be obtained separately.

Which of the compatible part numbers matches the 305 W unit for the Optiplex 980 Mini Tower?

Part number K345R identifies the 305 W supply built for the Optiplex 980 Mini Tower; the other listed numbers correspond to different revisions or wattages.

What does the 305 W rating mean for daily use in an Optiplex 980 MT?

It provides up to 305 watts of continuous power for the motherboard, drives and expansion cards installed in the Mini Tower chassis.

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