$ lsusb
Bus 001 Device 003: ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
Bus 001 Device 002: ID 8087:8000 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 5986:0268 Acer, Inc
Bus 002 Device 004: ID 8087:07dc Intel Corp.
Bus 002 Device 003: ID 138a:0017 Validity Sensors, Inc. Fingerprint Reader
Bus 002 Device 002: ID 0bdb:193e Ericsson Business Mobile Networks BV
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub