How to identify usb lamp in linux?

Question

linux

There is a usb lamp. (Cornyly, several diodes hang on the power supply)
How to identify it in order to control it?
Inclusion

# echo 0 > /sys/bus/usb/devices/DEVICE/authorized
# echo on > /sys/bus/usb/devices/DEVICE/power/level

Shutdown

# echo auto > /sys/bus/usb/devices/DEVICE/power/level
# echo 1 > /sys/bus/usb/devices/DEVICE/authorized

(The on-off algorithm was found by poke and google unfortunately)
Linux notebook 3.16.0-49-generic #65~14.04.1-Ubuntu SMP Wed Sep 9 10:03:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Answer 1

lsusb and writing rules for udev to fix the device name?