Sugiro
lsusb
de acordo com seu autor,
lsusb
is a utility for displaying information about USB buses in the system and the devices connected to them.
Um exemplo:
hani@My-FRIEND:~$ lsusb
Bus 001 Device 002: ID 8087:8001 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 8087:07dc Intel Corp.
Bus 002 Device 004: ID 04f2:b3a3 Chicony Electronics Co., Ltd
Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 002 Device 007: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 002 Device 002: ID 0458:0185 KYE Systems Corp. (Mouse Systems)
Bus 002 Device 006: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Então, como você vê, a sétima linha da saída mostra detalhes sobre a unidade flash (unidade USB) que está conectada agora ao computador (via porta USB).