DELL Precision M6400 Left IO Circuit Board W215F

Genuine Dell Precision M6400 Left IO Board

This genuine Dell replacement board restores the left-side connectivity on a Precision M6400 laptop. It integrates audio jacks, two USB ports and a media card reader into a single circuit assembly. The part carries Dell part number W215F and is supplied as a working pull in like-new condition.

Practical limits of the left-side IO assembly

The board provides only the ports physically present on the left edge of the chassis; it cannot add interfaces the motherboard does not already support. Bandwidth and power delivery for the two USB ports are defined by the host controller on the mainboard, not by this daughter board. The media card reader supports the formats the original M6400 platform was designed to accept.

Replaces a damaged or worn original IO board

Swapping this board is the direct fix when audio jacks fail, USB ports stop enumerating devices or the card reader no longer detects media. The upgrade is worth it when the rest of the M6400 remains functional and a full motherboard change is unnecessary. Installation requires disassembly of the laptop chassis to access the left-side connector.