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Green circuit board with USB ports audio jacks ExpressCard slot and card reader P/N F421N

DELL

DELL Alienware M17x IO Circuit Board F421N

SKU CH-1CCK-VSRTB

Replacement I/O board adding USB ports, audio jacks, an ExpressCard slot and a media card reader to the Alienware M17x laptop

  • CPU Typelaptop-computer-replacement-parts
  • Genuine Dell OEM part for Alienware M17x
  • Restores USB jacks audio ports ExpressCard slot media reader
  • F421N IO board connects directly to motherboard
  • New condition working pull like new quality
  • Exact replacement matches pictured component 17 421

Genuine Dell IO board for Alienware M17x

This is a genuine Dell OEM IO circuit board carrying the part number F421N. It provides USB jacks, audio ports, an ExpressCard slot and a media card reader for the Alienware M17x laptop. The component connects directly to the motherboard. It is supplied new and matches the item shown in the product imagery.

Thermals noise and power draw

As a passive interface board it generates no measurable heat or noise of its own. Power consumption is limited to the low-current signalling required by the connected USB, audio and ExpressCard devices. No active cooling or additional power connectors are involved.

Alienware M17x compatibility only

The board is designed exclusively for the Alienware M17x chassis and will not fit other Dell or Alienware models. Builders repairing a different laptop or upgrading to a newer platform cannot use this part. Verify the exact model before purchase.

Highlights

  • Genuine Dell OEM part for Alienware M17x
  • Restores USB jacks audio ports ExpressCard slot media reader
  • F421N IO board connects directly to motherboard
  • New condition working pull like new quality
  • Exact replacement matches pictured component 17 421

Specifications

BrandDELL
CPU Typelaptop-computer-replacement-parts

Questions about this item

How do I fit the F421N IO board into my Alienware M17x without damaging the motherboard connector?

Remove the palm-rest, disconnect the battery, unplug the old board's ribbon cable, align the F421N connector squarely, press gently until it clicks, then reassemble in reverse order.

Will the USB ports, audio jacks or ExpressCard slot on the F421N need periodic cleaning or replacement?

The ports are soldered to the board; only occasional compressed-air cleaning of dust from the openings is required — no scheduled part replacement.

What fails first on the F421N when the laptop runs hot for long sessions?

The surface-mount USB controller and audio codec are the first components to show thermal stress after extended heavy loads.

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