lsusb (not as root) with an OTG adapter plugged in without anything plugged into it I get :
u0_a83@flounder:/ $ lsusb Bus 001 Device 001: ID 1d6b:0002 Bus 002 Device 001: ID 1d6b:0002 Bus 003 Device 001: ID 1d6b:0002
Is this normal with USB OTG adapters.
Also a USB hub is recognized as another device in
lsusb when plugged using OTG