DELL Vostro 5301 Motherboard i5-1135G7 MX350 55KG3

Dell Vostro 5301 Replacement Board

This genuine Dell OEM motherboard is built specifically for the Vostro 5301 laptop equipped with discrete Nvidia GeForce MX350 graphics. It arrives with the quad-core Intel i5-1135G7 processor already soldered on, reaching a maximum turbo frequency of 4.2GHz. The board includes 2GB of dedicated video memory for the MX350 GPU. It is intended for repair technicians or owners restoring a Vostro 5301 that originally shipped with the discrete graphics option.

Discrete Graphics Upgrade Path

This system board replaces a failed unit in a Vostro 5301 that already uses the Nvidia MX350 discrete graphics subsystem. It is not a direct replacement for models that rely solely on integrated Intel graphics, as the board layout and cooling provisions differ. The jump is worth it only when the original motherboard has failed and the laptop chassis, display assembly and cooling solution are confirmed compatible with the discrete graphics configuration. Verify the Dell part number 55KG3 against your service tag before ordering.

Installation Notes

Installation requires full laptop disassembly, including removal of the display assembly, keyboard deck, heat pipes and all internal cabling. The on-board CPU and GPU eliminate socket handling but demand careful thermal paste application and proper torque sequence on the heat-sink screws. Common issues include mismatched wireless antenna routing, forgotten display cable connectors and using a heatsink designed for integrated-graphics models, which leaves the MX350 die uncontacted. Take photos at each step to ensure correct reassembly.