lsusb

List USB devices connected to the system.

What it does

lsusb shows information about USB buses and devices such as keyboards, mice, storage devices, and hubs.

# List USB devices
lsusb

# Verbose output
lsusb -v

# Filter by vendor
lsusb | grep -i logitech

# Show tree view (if supported)
lsusb -t

# Show numeric IDs
lsusb -nn