Genuine Dell OEM Chromebook 3120 Laptop right-side USB port IO circuit board daughterboard- this houses USB Type-C port. This board is compatible with the LAPTOP version of the Chromebook 3120 without the optional WWAN (4G / 5G) wireless.
The Chromebook 3120 laptop was offered with different wireless options- this IO board part number is compatible with Chromebook 3120 laptops that do NOT have the optional WWAN wireless feature; this is for systems that have WLAN (Wifi) ONLY.

Compatible Dell Laptops/Notebooks:
Chromebook 3120 laptop WITHOUT WWAN

DPN: X9T75

alt p/n's:
JDB10
LS-L562P
7TV57

NOTE: The Chromebook 3120 laptop was offered with different wireless options- this IO board part number is compatible only with Chromebook 3120 laptops that do NOT have the optional WWAN wireless feature; this is for systems that have WLAN (Wifi) ONLY.