Quectel RM551E-GL card not recognised in BPi-R4-Pro

Banana Pi Router design BPI-R4/BPI-R4 Pro(MT7988)
1

As title, I’m using the latest ‘supplied’ fw but my Quectel RM551E-GL 5G card is not recognised or found in any of the M2 sockets (USB only or USB/PCIe sockets) on the top of the board.

I read there is possibly some issue about USB not being found, but could someone advise me…

2

You have to make sure pcie lanes are switched to key-b…in my dts aply the overlay for the right pcie slot (cnX)

3

Thanks. Could you elaborate a bit please?

4

Also, I want to use a usb connection to the RM551E-GL, not Pcie, if possible…

5

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This likely means you need to modify the GPIO level to select which interface the PCIe signal goes to. However, you might need to check if the module only uses USB signals and not PCIe signals.

6

Thanks. The RM551E-GL can be connected over both PCIe and USB. Please advise me how to apply the overlay for the right slot - I am afraid I don’t know what you mean… Or if you can tell me of a wiki to read, that would be great, thanks!