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Flat orange ribbon cable with connectors at both ends

DELL

DELL Chromebook 11 3120 USB IO Board Ribbon Cable accessory

SKU CH-PXD1-HHS76

A genuine Dell OEM ribbon cable connecting the USB IO board to the motherboard on the Chromebook 11 (3120) launched in 2015

  • Genuine Dell OEM part ensures exact fit
  • Connects USB IO board to motherboard directly
  • Designed for Chromebook 11 3120 model
  • Compatible with units launched early 2015
  • Replaces part numbers ZM8 DM-MB FFC DEFC0509025

Genuine Dell OEM replacement part

This is a genuine Dell OEM ribbon cable for the USB IO board in the Chromebook 11 (3120). It connects the USB IO board to the motherboard. The part matches the component shown in the product images and carries alternative part numbers ZM8 DM-MB FFC and DEFC0509025. It is intended for repair or maintenance of the specified laptop model.

Sustained load behaviour

The cable provides a passive electrical connection between the USB IO board and the motherboard. It does not contain active electronics, so its operation does not change under sustained load. Signal integrity depends on the physical condition of the flexible flat cable and its connectors. No performance degradation occurs over time unless the cable is damaged.

Thermals, noise and power

As a passive flexible flat cable, this component generates no heat and produces no audible noise. It draws no electrical power of its own and does not affect the thermal or acoustic profile of the Chromebook 11 (3120). The part simply transmits signals and power between the two boards.

Highlights

  • Genuine Dell OEM part ensures exact fit
  • Connects USB IO board to motherboard directly
  • Designed for Chromebook 11 3120 model
  • Compatible with units launched early 2015
  • Replaces part numbers ZM8 DM-MB FFC DEFC0509025

Specifications

BrandDell

Questions about this item

Does the ribbon cable generate any heat or noise during continuous use?

No, the ribbon cable is a passive component that carries signals between the USB IO board and the motherboard without producing heat or noise.

What existing hardware must I already own for this cable to function?

You need a Dell Chromebook 11 (3120) from the 2015 launch with a compatible USB IO board and motherboard.

Will this cable work if I keep the original motherboard in my Chromebook 3120?

Yes, the cable is designed to connect the USB IO board to the original motherboard in the Chromebook 11 (3120).

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