4G module via USB
BPI 4G module
review
BPI-4G module extension board with 1 Non-standard micro USB port,you can connect banana pi board with this port ,use 4G function development . also support PIN define ,and connect to BPI-R2. user also can choose 4G module onboard and use the universal 4G module in the market.
spec
BPI-4G module (4G on board )