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Dell RKTF0 180W SFF power supply unit with 8-pin connector

DELL

DELL RKTF0 Optiplex 5040/7040 180W 8-Pin SFF Power Supply

SKU CH-78CC-83QF4

An 180 W desktop power supply for OptiPlex 5040 and 7040 small-form-factor systems with an 8-pin connector

  • Max wattage180 W
  • Modular cablingNo
  • Fan configuration1 Fan
  • Product typeDesktop Power Supply
  • Product weight5
  • 180 W output powers OptiPlex 5040 and 7040 SFF desktops
  • 8-pin connector matches original motherboard layout exactly
  • Single built-in fan keeps temperatures stable under load
  • Non-modular cabling simplifies installation in compact cases
  • Genuine Dell RKTF0 part ensures correct fit and voltage regulation

Dell OptiPlex SFF 180 W PSU

This Dell RKTF0 power supply delivers 180 W in a small-form-factor chassis. It is built for OptiPlex 5040 and 7040 desktops that require the proprietary 8-pin connector. The unit includes a single cooling fan and is supplied new for direct replacement.

Replaces failed OptiPlex PSU

It swaps out the original supply when that unit has failed or shows voltage instability. The upgrade is only worth it if the system uses the same 8-pin pin-out and fits the SFF housing; other Dell towers or third-party boards will not accept this connector layout.

Limited to proprietary 8-pin SFF interface

The fixed 8-pin output and SFF dimensions prevent use in standard ATX cases or motherboards with 24-pin main power. Cable length and routing are tailored to the OptiPlex 5040/7040 layout, so builders needing modular cables or higher wattage must choose a different platform.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 92% of the 10,869 comparable items (median $142.99).
Max wattage 180 W
Lower than about 97% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameDELL
Product typeDesktop Power Supply
Power
Max wattage180 W
Modular cablingNo
More details
Fan configuration1 Fan

Questions about this item

Will this power supply fit a Dell OptiPlex 5040 or 7040 small-form-factor chassis?

Yes, the RKTF0 is built for the 5040 and 7040 SFF chassis and uses the 8-pin connector those systems require.

How do I install the RKTF0 and what is the step people most often miss?

Slide the unit into the SFF bay, secure the retention screw, then plug the 8-pin motherboard connector; the step often missed is fully seating that 8-pin plug until it clicks.

What maintenance will the RKTF0 need over time?

The single internal fan should be cleared of dust periodically; no other user-serviceable parts are inside the sealed 180 W unit.

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