USB Port for storage

Hello I struggling to under how the USB port on GL-AR750 and GL-AR300M for storage.
I have plugged in the micro sd card with micro sd card adapter. Both router doesn’t seem indicate or recognized the usb as storage. The only work is on the SD card slot on GL-AR750.

Could you show the kernel log and system log? You can find it on luci->Status.

what supposed to see there?

yup! You can paste the output in here.

There is limitations i can’t paste the log here because to long characters and i can’t attach zip as well because of forum rules

You can pm me. E-mail: