Amazon.com: EXVIST 4G LTE Industrial Mini PCIe to USB Adapter Industrial Dongle W/SIM Card Slot Compatible W/WWAN/LTE 3G/4G Mini PCIe Module Like Quectel EC25-AF EG25-G etc. for Quick Network Connection : Electronics
Amazon.com: Mini PCI-E to USB Adapter with SIM Card Slot for 3G / 4G Network Cards : Electronics
Orange Pi 4 SBC Gets a $16 4G LTE mini PCIe Card based on Rockchip RM310 - CNX Software