Adding 4G LTE to you CF-54 Toughbook or its new replacement the FZ-55 Panasonic Toughbook is a great feature that will give added use to your computer.  All 4G LTE enabled FZ-55 Toughbooks come with the new EM7511 modem which is multi-carrier but also AT&T FirstNet compatible for all public safety users.  Once the Toughbook is received, activating it on your cellular plan and receiving a SIM card from your cell carrier will get you up and running in no time.  In this video, The Rugged Store shows where exactly the SIM card should be installed in both the CF-54 and the FZ-55 Panasonic Toughbooks.  You can also find the SIM card slots in each Toughbooks User Manual:

FZ-54 SIM Card Slot Page 6:

https://cpt.pc-dlp.panasonic.co.jp/public/s_manual/cf-54/cf54mk2-oi_basic-20150332zcd-en.pdf

If you are interested in purchasing an FZ-55 or have related questions please contact us at https://theruggedstore.com/panasonic-toughbook-fz-55-current-generation/