Amazon.com: Sierra Wireless USBConnect U305 3G USB Modem - AT&T : Electronics
5G LTE USB stick M.2 (NGFF) Key B to USB3.0 adapter Enclosure with Sim Card Slot fit for 5GNR M.2 Quectel RM500Q RM510Q SIMCOM8200
Proxicast - 8 dBi High Gain External Magnetic Antenna for Cradlepoint, Novatel, Pepwave, CalAmp, Digi, Sierra, Red Lion and other 3G / 4G / LTE routers & modems with SMA connectors