Dell Chromebook 3100 Laptop USB IO Board 40-pin Ribbon Cable- genuine Dell OEM Ribbon Cable that connects the USB IO board to the motherboard; for the 3100 laptop version. There are two cables that connect the IO board, this is the 40-pin cable.
Compatible Dell Laptops:
-Chromebook 3100 Laptop with WWAN
DPart Number: MRKW3
Alternate Part Number's:
GDA10
NBX0002T200
NOTE: this is for the LAPTOP version of the Chromebook 3100 with the optional 4G LTE WWAN wireless; this is not compatible with the 2N1 version.