USB to M.2 Key B 4G 5G Modem Adapter with Dual SIM Card Slots - The Wireless Haven
Cradlepoint W1850 LTE Adapter | Free Shipping
Amazon.com: EXVIST 4G LTE Industrial M.2(NGFF) to USB3.0 Adapter W/Nano SIM Card Slot Work with 4G LTE Module Like Quectel EM05 EM06 etc. Applicable for M2M & IoT Applications Like Raspberry Pi
Mini LTE Modem & Mount (RealWear Navigator™ 500 Series)
Amazon.com: SIM7600G-H 4G LTE USB Dongle, 4G DONGLE Module USB UART Communication Support 2G 3G 4G 50Mbps Uplink 150Mbps Downlink, with Rotatable Antenna : Electronics
Mini Wireless PCI-E to USB Adapter with SIM Card Slot for 3G 4G WWAN/LTE Module | eBay
Amazon.com: High Speed 4G LTE USB Network Adapter Wireless WiFi Hotspot Router,Share Up to 8 WiFi Users Plug and Play(with WiFi Function) : Electronics