I’m thinking of buying the banana pi bpi-r4 and using it as a 5g modem. Do I have to buy the m.2 module for 5g to make that work?
If you are planning on using wifi7 module, then you need to use m.2 wifi module such as Quectel RM520N-GL (5G-modem). If you are not planning on using your R4 as a Access Point then you can use any mini-pcie compatible module such as Quectel EC200A or EC25-E (4G modem) etc… Good thing is R4 has two mini-pcie module, so you can use one for 4g module and another one as a access point if you have a wifi chip around such as MT7975 MiniPCIe
I plan on using it as a 5g modem so what all do I need?