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Small green circuit board with USB port and SD card slot

DELL

DELL G5 5590 G7 7790 SD Card Reader USB IO Board 4DDHW

SKU CH-PWY2-NZ1RN

Genuine Dell OEM IO board with USB port and SD card reader for G5 5590 and G7 7790 laptops

  • ProcessorLaptop-computer-replacement-parts
  • Genuine Dell OEM part for reliable repair
  • Adds USB port and SD card reader slot
  • Compatible with Dell G5 5590 laptops
  • Compatible with Dell G7 7790 laptops
  • Exact replacement for Dell part number 4DDHW

Genuine Dell OEM IO Board

This genuine Dell OEM IO circuit board provides an SD card reader and a USB port for compatible G Series laptops. It serves as a direct replacement for the original daughterboard in G5 5590 and G7 7790 models. The part carries Dell part number 4DDHW.

Suits owners of listed G Series models

This board fits only the G Series G5 5590 and G Series G7 7790 notebooks. It will not work in other Dell series or different generations of the G lineup. Buyers needing a repair part for any other laptop model should look elsewhere.

Dell part number 4DDHW confirms fit

Verify the DPN 4DDHW against your service manual or the sticker on the failed board before ordering. Matching this number is the only way to ensure the replacement aligns with your specific laptop configuration.

How it compares

Measured against everything we stock in USB & Internal Card Readers, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 90% of the 511 comparable items (median $18.99).

Specifications

Product
Brand nameDELL
Processor
ProcessorLaptop-computer-replacement-parts

Questions about this item

Will the 4DDHW board fit my Dell G5 5590 chassis?

The board is an OEM replacement built for the G5 5590 and G7 7790 chassis, so it aligns with the existing screw posts and cut-outs on those models.

Which cable connectors must be seated during installation of the 4DDHW board?

Install the board by connecting the flat-flex ribbon to the motherboard header and the USB/SD daughterboard connector; the step often missed is fully locking the ribbon latch before screwing the board down.

Does the SD slot on the 4DDHW board wear out and need replacement?

The SD slot is soldered to the board; if the spring mechanism fails or pins bend, the entire 4DDHW board is replaced rather than servicing the slot alone.

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