To support 4G LTE / NB-IoT connection, the UNO-to-PCI adapter board, which allows the telecom module to be used on Nuvoton NuMaker series development platform through UART or USB interfaces. The adapter board supports Quectel EC21 4G/LTE and Quectel BG96 NB-IoT modules.
Board Feature
UNO to PCIe adapter board specification:
One mini PCIe interface for specified telecom modules
Quectel EC21 miniPCIe (4G/LTE)(Please refer Quectel web site for EC21 module https://www.quectel.com/product/ec21.htm)
Quectel BG96 miniPCIe (NB-IoT)
ZTE ME3616 (NB-IoT)
Support UART (via Arduino) and USB interface
UART supports Tx/Rx/CTS/RTS signals
UART supports 1.8v or 3.3v voltage
One mini SIM card slot
One RESET button
One telecom module status LED
Three LED controlled by GPIO
Useful Link:
Adapter Board User Manual
Schematics and Layout