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Flat ribbon data cable with 40 pin connectors for Dell Inspiron 7490

DELL

DELL Inspiron 7490 Daughter IO Board Data Cable 57KNT

SKU CH-B12V-RN5Q4

Genuine Dell OEM cable connecting the daughter IO board to the motherboard on Inspiron 7490 laptops

  • Genuine Dell OEM replacement cable for Inspiron 7490
  • Connects right-side IO board to motherboard using part 57KNT
  • Exact match for Dell part number 57KNT and EDW40_IO_CABLE_2D_40P
  • Brand-new component ensures reliable data transfer on compatible 7490 systems

Genuine Dell OEM Daughter IO Board Cable

This genuine Dell OEM part connects the right-side IO board to the motherboard inside the Inspiron 7490 laptop. It carries the Dell part number 57KNT and matches the EDW40_IO_CABLE_2D_40P specification. The cable is supplied new and is intended for repair or replacement of the original interconnect.

Practical limits of the internal flex interconnect

The 40-pin flex cable fits only the Inspiron 7490 chassis and cannot be adapted to other Dell models or third-party systems. It provides the physical link for USB, audio and card-reader signals on the right side, so a damaged cable will disable those ports. Installation requires disassembly of the laptop base and careful routing of the fragile ribbon; buyers without board-level repair experience should seek professional service.

Highlights

  • Genuine Dell OEM replacement cable for Inspiron 7490
  • Connects right-side IO board to motherboard using part 57KNT
  • Exact match for Dell part number 57KNT and EDW40_IO_CABLE_2D_40P
  • Brand-new component ensures reliable data transfer on compatible 7490 systems

Specifications

BrandDell

Questions about this item

Is this the correct daughter IO board data cable for a Dell Inspiron 7490?

Yes, this genuine Dell OEM cable (part 57KNT) connects the right-side IO board to the motherboard in the Inspiron 7490 and matches the EDW40_IO_CABLE_2D_40P and DC02C00M600 references.

What does the 40-pin specification mean for installation?

The 40-pin connector matches the motherboard and IO board headers on the Inspiron 7490, ensuring proper alignment and signal routing for USB, audio and power-button functions without adapters.

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