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Black rectangular metal power supply unit with side fan grille and rear power socket

myVolts

myVolts 240W power adapter for Dell Optiplex 3040 3650 3656 5040 7040 SFF

SKU CH-HAP7-HS6X2

240 W replacement power supply for Dell Optiplex 3040, 3650, 3656, 5040 and 7040 SFF systems

  • Direct replacement for Dell Optiplex 3040 3650 3656 5040 7040 SFF
  • Matches original part numbers 4GTN5 4R1KT D7GX8 HGRMH 2P1RD H62JR 3RK5T 6WX7D 0M1C3
  • Delivers 240W output power for stable system operation
  • Accepts 100-127V input for wide voltage compatibility
  • Includes 8+4 pin connector for proper motherboard fit

Direct replacement for Dell Optiplex SFF

This 240W power adapter replaces the original supply in Dell Optiplex 3040, 3650, 3656, 5040 and 7040 small-form-factor desktops. It matches the B240NM-00, HU240AM-00 and AC240EM-00 part numbers listed by Dell. The unit is new and carries a 12-month warranty.

240W output with 8+4-pin connector

The adapter delivers a maximum of 240W from a 100-127V input rated at 7.0A. It uses the 8+4-pin connector required by the compatible Optiplex motherboards. Buyers whose systems need a higher wattage or a different pin layout cannot use this unit.

Simple swap using existing cables

Installation consists of removing the old supply, fitting this unit into the same chassis bracket and reconnecting the 8+4-pin motherboard cable. The most common issue is ordering the wrong part number; verify the Dell part number on the original supply before purchase.

Highlights

  • Direct replacement for Dell Optiplex 3040 3650 3656 5040 7040 SFF
  • Matches original part numbers 4GTN5 4R1KT D7GX8 HGRMH 2P1RD H62JR 3RK5T 6WX7D 0M1C3
  • Delivers 240W output power for stable system operation
  • Accepts 100-127V input for wide voltage compatibility
  • Includes 8+4 pin connector for proper motherboard fit

Specifications

No published specifications for this item yet.

Questions about this item

What does the 240W rating mean once the adapter is installed in an Optiplex 3040 SFF?

It supplies up to 240W of continuous power to the motherboard, CPU and add-in cards, matching the original Dell B240NM-00 specification for these small-form-factor desktops.

What connector standard does the 8+4-pin plug follow, and what does it limit?

The combined 8+4-pin connector carries both main and CPU power on Dell proprietary pin-outs, so it fits only the listed Optiplex SFF models and cannot be used with standard ATX boards.

What physical clearance does the unit need inside a 3040 3650 3656 5040 7040 SFF chassis?

It is built to the exact dimensions of the Dell HU240AM-00 and AC240EM-00 units, so it mounts directly in the factory power-supply bay without brackets or cable rerouting.

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