connections available in two configurations: USB cable plugged or not plugged in. To have
information about the physical ports, refer to document [1].
The test command returns, for example, the following message:
AT#PORTCFG=?
#PORTCFG: Variant=0: AT= USIF0 USB0 USB1
#PORTCFG: Variant=3: AT= USIF0 USIF1 USB0
#PORTCFG: Variant=8: AT= USB0 USB1
#PORTCFG: Variant=13: AT= USIF0 USB0
OK
The <Variant> range depends on the product.