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Black rectangular SFF power supply unit with side ventilation grille and rear IEC socket

myVolts

myVolts 255W power adapter for Dell Optiplex 3020 7020 9020 Precision T1700 SFF

SKU CH-18XD-2D71Q

Replacement 255 W power supply for Dell OptiPlex 3020, 7020, 9020 and Precision T1700 SFF systems, 100–240 V input

  • Delivers 255 W to Dell Optiplex 3020 7020 9020 and Precision T1700 SFF
  • Replaces multiple OEM part numbers including H255ES-00 and D255AS-00
  • Accepts 100-240 V 50-60 Hz input for worldwide use
  • Provides 8-pin and 4-pin ATX connectors for direct motherboard fit
  • 18-month coverage with every unit tested before shipping

Replacement 255 W power supply for Dell SFF systems

This 255 watt power supply replaces the original unit in Dell Optiplex 3020, 7020, 9020 and Precision T1700 small form factor chassis. It matches the listed part numbers including H255ES-00, D255AS-00 and PS-3261-2DF. The unit ships new and is tested before dispatch. It is intended for owners of those specific SFF workstations needing a direct swap.

Sustained load behaviour with 100-240 V input

The adapter accepts a wide 100 to 240 volt AC input at 50 or 60 hertz with a maximum draw of 265 watts and 5.0 amps. Under continuous operation it delivers up to 255 watts to the system through an 8-pin ATX connector and a 4-pin ATX connector. The design targets stable output for the supported platforms during extended workloads rather than short bursts.

Compatibility checks before ordering

Verify that your chassis is the small form factor version of the Optiplex 3020, 7020, 9020 or Precision T1700, as other form factors use different mechanical and electrical layouts. Confirm the existing power supply carries one of the listed part or model numbers such as YH9D7, R7PPW or NT1XP. This unit does not fit full-size tower or micro variants.

Highlights

  • Delivers 255 W to Dell Optiplex 3020 7020 9020 and Precision T1700 SFF
  • Replaces multiple OEM part numbers including H255ES-00 and D255AS-00
  • Accepts 100-240 V 50-60 Hz input for worldwide use
  • Provides 8-pin and 4-pin ATX connectors for direct motherboard fit
  • 18-month coverage with every unit tested before shipping

Specifications

No published specifications for this item yet.

Questions about this item

How much heat and noise does the 255W unit produce when running continuously in a Dell Optiplex 9020 SFF?

The replacement supply draws up to 5.0A at 100-240V input with a 265W maximum rating, so sustained loads near 255W will generate noticeable warmth and fan noise inside the small chassis.

Which cables or connectors must already be present in the Optiplex 3020 for this power supply to work?

The motherboard must provide an 8-pin ATX power socket (P1) and a 4-pin ATX power socket (P2) matching the connectors on this unit.

Will the 255W adapter fit and power a Precision T1700 SFF that currently uses a lower-wattage Dell supply?

Yes — it replaces Dell part numbers such as H255ES-00, D255AS-00 and PS-3261-2DF, so it fits the same SFF mounting points and delivers up to 255W to the existing components.

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