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Silver rectangular Dell RT490 280W PSU for OptiPlex 620 745 755 DT

DELL

DELL RT490 280W power supply for OptiPlex 620 745 755 DT

SKU CH-38CV-FK2X8

A 280 W power supply for Dell OptiPlex 620, 745 and 755 desktop towers

  • 280 W output powers OptiPlex desktops reliably
  • PFC circuitry improves electrical efficiency
  • Exact fit for OptiPlex 620 745 755 DT
  • New genuine Dell part number RT490

DELL RT490 280W PSU for OptiPlex DT

This DELL RT490 power supply delivers 280W of power with active PFC for OptiPlex 620, 745 and 755 desktop towers. It is a new, genuine Dell replacement module built to the original specification for those chassis. The unit fits the proprietary mounting and connector layout used by the listed OptiPlex models.

Suits owners of OptiPlex 620 745 755 DT needing

Buyers with a different form factor such as SFF or MT should look elsewhere because the connector pin-out and bracket differ. Systems requiring more than 280W for upgraded graphics or additional drives will need a higher-output unit compatible with their specific chassis.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $62.99
Typical for this category: the median of 1,517 items is $68.99.

Specifications

Product
Brand nameDELL

Questions about this item

Does the RT490 280W supply use a standard ATX connector for the OptiPlex motherboard?

The RT490 is a Dell proprietary unit built for the OptiPlex 620, 745 and 755 DT chassis; its connector and pinout match those models only.

Will this 280W unit fit a small-form-factor OptiPlex case?

No, the RT490 is sized for the full-size desktop tower chassis of the OptiPlex 620, 745 and 755 DT and will not mount in SFF or USFF cases.

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