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Dell OptiPlex 3240 motherboard accessory with LGA 1151 socket

DELL

DELL 4075X Motherboard Accessory for OptiPlex 3240 LGA 1151

SKU CH-SSH7-JQSVB MPN 4075X

Genuine Dell motherboard accessory for OptiPlex 3240 systems with LGA 1151 socket

  • Genuine Dell replacement for OptiPlex 3240 systems
  • LGA 1151 socket supports compatible Intel processors
  • Part number 4075X matches original equipment exactly
  • New motherboard accessory restores full system functionality

Dell OptiPlex 3240 motherboard accessory

This genuine Dell part carries number 4075X and fits the OptiPlex 3240 all-in-one desktop. It is built for LGA 1151 socket platforms and suits repair technicians or system integrators working on that specific chassis. Buyers needing a board for a different OptiPlex model or a standard ATX case cannot use this component.

Proprietary layout matches the original chassis

The accessory follows the exact mounting pattern and connector placement Dell defined for the 3240 AIO, so it aligns with the integrated display, power delivery and I/O cut-outs without modification. Installers must verify the part number against their service tag because the form factor prevents use in generic enclosures or other Dell families.

How it compares

Measured against everything we stock in Motherboard Add-On Parts, at today’s prices. Recalculated every night.

Price $34.99
Cheaper than about 60% of the 242 comparable items (median $50.49).

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Specifications

Product
Brand nameDell
Model nameOptiPlex 3240
Part number4075X

Questions about this item

What CPU socket does the Dell 4075X motherboard use?

The board is built for an LGA 1151 socket, so only processors with that exact pin layout will fit.

Which chassis is this motherboard designed to mount inside?

It is a direct replacement for the OptiPlex 3240 all-in-one desktop and uses that unit's proprietary mounting points.

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