Amazon.com: NETGEAR 4G LTE Broadband Modem (LM1300) – Use LTE as a Primary Internet Connection or Failover Solution for Always-On WiFi, Certified with AT&T, T-Mobile, & Verizon (Renewed), White : Electronics
4G LTE WiFi Router, Portable Wireless Hotspot with SIM Card Slot for Travel, High Speed USB Mini WiFi Modem Network Adapter - Walmart.com
This dirt cheap 4G LTE modem on a USB stick can be hacked to run mainline Linux - Liliputing
Amazon.com: NETGEAR 4G LTE Broadband Modem - Use LTE as Primary Internet Connection (LB1120) : Electronics
Amazon.com: TUOSHI N300 WiFi Unlocked 4G LTE Modem Router with SIM Card Slot, 300Mbps WiFi, LTE Cat4, EC25-AF Qualcomm Chipset, 5dBi High Gain Antennas, Plug and Play, LT15F : Electronics