02-28-2014 12:47 AM
Welcome to Lenovo Community Forums!
Inserting a SIM card will enable WWAN in your device.
But, to activate WWAN in your Lenovo ThinkPad E540, first you have to ensure that you have a WWAN card and WWAN antennas installed. WWAN upgradable models have the WWAN antennas installed from the factory these will be red and blue wires (the Wi-Fi are typically white, black and grey or just black and grey depending on model).
If you have WWAN antennas installed from the factory, probably you need to purchase a compatible WWAN card and install it.
Go to Lenovo Support site, enter MTM number of your device in quick path and get the system specifications. If you find any difficulties, please share the MTM of your device.
Hope this helps!
03-09-2014 10:23 PM
04-11-2016 11:23 PM
i have lenovo E540 model windows 8.1 i install the Lenovo Mobile Broadband Activation but its error
there is not a suppoorted wireless wan card installed in this computer . this setup cannot continue
how i was installed