More info:
$ dmesg | grep -i synaptics [ 17.639725] Synaptics Touchpad, model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04773/0xe40000/0x5a0400 [ 17.639732] synaptics: support LED control [ 17.639795] Registered led device: psmouse::synaptics [ 17.714812] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input8
More info:
$ dmesg | grep -i synaptics 0xe40000/ 0x5a0400 platform/ i8042/serio1/ input/input8
[ 17.639725] Synaptics Touchpad, model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04773/
[ 17.639732] synaptics: support LED control
[ 17.639795] Registered led device: psmouse::synaptics
[ 17.714812] input: SynPS/2 Synaptics TouchPad as /devices/