02-12-2018 04:50 AM
I have the Thinkpad X250 and would like to install the WWAN module.
Can you please advise the exact model?
I have tried the EM7455 but got the following error after power on: 1802 unauthorized network card is plugged in
Thank you in advance,
02-12-2018 05:16 AM - edited 02-12-2018 05:21 AM
EM7455 isn't a whitelisted WWAN module for your X250 - it was whitelisted for Skylake's ThinkPad generation devices. There are two dedicated WWAN modules for your device:
- FRU: 04W3842, Ericsson N5321 HSPA+ 21Mbps M.2 WWAN.
- FRU: 04X6014, Sierra EM7345 LTE/HSPA+ 42Mbps M.2 Card.
You must buy a module with correct FRU on label. There are generic modules available on the market, but they won't work with your X250, as BIOS will detect them as unauthorized devices.