@konarktriv7 wrote: I've got a ThinkPad X220 that doesn't have a wireless WAN PCI-E card inside it, or the antennae (I can only see the WiFi antennae when I open it up). It does have a SIM card port underneath the battery, though. Can I add wireless WAN to it? If you have good contacts, you might be able to find an original part, but the X220 is an old model and I doubt that many replacement components are still stocked. You might get lucky.   In your shoes, I'd consider using a LTE modem that would plug into a USB or Ethernet port. This would be easier to acquire, and would potentially offer higher throughput than you would get from comparatively aged technology.   Otherwise, tether a smartphone to the X220 and share the phone's connection. ... View more