I don't know if Dell continued this in newer models, but I was pleasantly surprised by the versatility of the WWAN slot in my circa-2008 Precision workstation l

I don't know if Dell continued this in newer models, but I was pleasantly surprised by the versatility of the WWAN slot in my circa-2008 Precision workstation laptop. No BIOS whitelist, antenna connectors that run up into the screen where the front bezel is plastic (allowing good reception), and plenty of room for an adapter. Grabbed a cheap adapter and AX210 card and stuck them in there and it all just works and so now it's equipped with BT and wifi better than is in my 13-years-newer X1 Nano.