On a HP Pavillion ZV5000 series : cat /sys/bus/pnp/devices/*/id PNP0c02 PNP0c01 PNP0c02 PNP0200 PNP0800 PNP0b00 PNP0c04 PNP0303 PNP0f13 PNP0a05 PNP0700 PNP0401 -- grenier