/var/log/message
Dec  2 23:50:08 debussy /kernel: ugen0: SIIG DigiFilm-Combo Reader, rev 1.00/0.01, addr 6

usbdevs -v
port 4 addr 6: power 100 mA, config 1, DigiFilm-Combo Reader(0x0004), SIIG(0x07cc), rev 0.01