lsusb
[gen@myhost Steam]$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0bda:0181 Realtek Semiconductor Corp.
Bus 004 Device 002: ID 0461:0010 Primax Electronics, Ltd
Bus 005 Device 006: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 005 Device 007: ID 0763:2012 Midiman M-Audio Fast Track Pro
ls /dev/snd*
by-id by-path controlC0 controlC1 controlC2 hwC0D0 hwC2D0 midiC1D0 pcmC0D0c pcmC0D0p pcmC0D1p pcmC0D2c pcmC1D0c pcmC1D0p pcmC1D1c pcmC1D1p pcmC2D3p seq timer
ls /dev/snd/*
/dev/snd/controlC0 /dev/snd/controlC2 /dev/snd/hwC2D0 /dev/snd/pcmC0D0c /dev/snd/pcmC0D1p /dev/snd/pcmC1D0c /dev/snd/pcmC1D1c /dev/snd/pcmC2D3p /dev/snd/timer
/dev/snd/controlC1 /dev/snd/hwC0D0 /dev/snd/midiC1D0 /dev/snd/pcmC0D0p /dev/snd/pcmC0D2c /dev/snd/pcmC1D0p /dev/snd/pcmC1D1p /dev/snd/seq
/dev/snd/by-id:
usb-M-Audio_FastTrack_Pro-00
/dev/snd/by-path:
pci-0000:00:13.0-usb-0:2:2.0 pci-0000:00:14.2 pci-0000:01:00.1