RM520N-GL only ttyUSB0 and ttyUSB1 enumerate on a linux device running linux kernel 5.4.223. This kernel seem to have the needed patches for the 520 to be supported. However as you can see in the dmesg output below, it seems like the VID and PID are for the generic EC25 0x0125 instead of for the rm5…

RM520N-GL only ttyUSB0 and ttyUSB1 enumerate

jfrog November 10, 2023, 5:51pm 6

You need to change what you need to change and keep other values intact.
If you google for it you should eventually hit this page:

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