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Dell 250 W ATX power supply unit, metal enclosure, single fan, new condition

DELL

DELL 3E466Product 250 W ATX power supply for OptiPlex GX400

SKU CH-KTWV-4D5VP MPN 3E466Product

A 250 W ATX power supply with one fan for Dell OptiPlex GX400 and Dimension 8100 desktops

  • Max wattage250 W
  • Product typeATX Power Supply
  • 250 W output powers OptiPlex GX400 reliably
  • Single internal fan cools the 250 W unit
  • ATX form factor fits Dimension 8100 chassis
  • Genuine Dell 3E466 part ensures correct pin-outs
  • Internal PSU design matches original 400-series specifications

DELL 3E466 250 W ATX power supply

The DELL 3E466 is a 250 W ATX power supply built for specific DELL desktop models. It serves as a direct replacement for the original unit in compatible systems. This new component is intended for owners of the listed DELL computers who need to restore reliable power delivery.

Internal ATX form factor with single fan

The supply uses an internal ATX form factor and includes one cooling fan. Its connector layout and mounting points match the chassis design of the supported DELL Dimension and OptiPlex models. Installation follows the original equipment layout without requiring adapter cables or bracket modifications.

Verify compatibility with Dimension 8100

Before ordering, confirm the exact model of your DELL desktop against the supported list: Dimension 8100 and OptiPlex GX400. This unit is not suited for other DELL lines or standard ATX builds that use different pin-outs or physical dimensions. Check your existing part number to ensure a correct match.

How it compares

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

Price $28.99
Cheaper than about 95% of the 10,869 comparable items (median $142.99).
Max wattage 250 W
Lower than about 94% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameDELL
Product typeATX Power Supply
Power
Max wattage250 W

Questions about this item

What ATX power limit does the 250 W unit actually deliver?

The power supply is rated for 250 W continuous output, matching the ATX form-factor specification for the OptiPlex GX400 and Dimension 8100.

What chassis and mounting points does the 3E466 require?

It uses the standard ATX internal form factor and fits the proprietary mounting brackets found in the OptiPlex GX400 and Dimension 8100 cases.

How is the 3E466 installed, and which cable step is often missed?

Slide the unit into the chassis, secure the four mounting screws, then connect the main ATX power connector and the auxiliary CPU power lead to the motherboard.

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