Use o usbtop , ele oferece uma boa visão geral de quais dispositivos estão usando a largura de banda:
Bus ID 1 (USB bus number 1) To device From device
Device ID 1 : 0.00 kb/s 0.00 kb/s
Device ID 2 : 0.00 kb/s 0.00 kb/s
Bus ID 2 (USB bus number 2) To device From device
Device ID 1 : 0.00 kb/s 0.00 kb/s
Device ID 4 : 141.73 kb/s 13777.68 kb/s
Device ID 5 : 9.98 kb/s 11.24 kb/s
Device ID 6 : 0.00 kb/s 0.00 kb/s
Device ID 7 : 0.00 kb/s 0.00 kb/s
Device ID 8 : 141.71 kb/s 15257.26 kb/s
Instale e execute da seguinte forma:
$ sudo apt install git cmake g++ libboost-dev libpcap-dev libboost-thread-dev libboost-system-dev
$ git clone https://github.com/aguinet/usbtop.git
$ cd usbtop
$ cmake .
$ make
$ sudo src/usbtop