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Small green circuit board with two USB ports and one audio jack

DELL

DELL Inspiron 11 3185 USB Audio IO Board M5MD4

SKU CH-WC8A-G0WTJ

Replacement IO board providing two USB ports and an audio jack for the Inspiron 11 3185 2-in-1

  • Genuine Dell OEM replacement ensures exact fit for Inspiron 11 3185
  • Two USB ports and one audio jack combined on a single IO board
  • Direct fit for Inspiron 11 3185 2-in-1 models without modification
  • Part number M5MD4 matches Dell service documentation for accurate ordering
  • New condition guarantees reliable connectivity for daily use

Genuine Dell OEM IO Board for Inspiron 11 3185

This circuit board provides two USB ports and an audio jack for the Inspiron 11 3185 2-in-1 laptop. It is a direct replacement part manufactured to Dell OEM specifications. The component restores connectivity when the original board fails or is damaged.

Replaces a faulty USB and audio daughterboard

The part swaps out the original M5MD4 board when ports stop working or suffer physical damage. Installation is worthwhile when the laptop otherwise functions but lacks peripheral connectivity. Alternate references include Drax 11 MLK AMD IO and CD38F for cross-referencing.

Limited to the Inspiron 11 3185 platform

Compatibility is confirmed only for the specific model listed in the specifications. The board will not fit other Dell laptops or different generations of the Inspiron line. Buyers must verify the exact model number before ordering.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 99% of the 2,965 comparable items (median $97.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameDELL

Questions about this item

Does this M5MD4 board fit the Dell Inspiron 11 3185 2-in-1 chassis?

Yes, the board is the genuine Dell OEM replacement for the Inspiron 11 3185 2-in-1 and matches the DPN M5MD4 and alternate part CD38F.

How is the USB audio IO board installed, and what step is often missed?

Remove the base cover, disconnect the board cable from the motherboard, swap the board, then reconnect the cable firmly; the step often missed is reseating that cable fully so both USB ports and the audio jack work.

When would this M5MD4 board need replacement?

Replace it if the two USB ports stop detecting devices, the audio jack produces no sound or static, or the ports feel loose from repeated plugging.

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