Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "wsmouse"
        Option      "Device" "/dev/wsmouse"
        Option      "ZAxisMapping" "4 5"
EndSection

uhidev0 at uhub1 port 1 configuration 1 interface 0 "Logitech USB Mouse" rev 1.10/6.20 addr 2
uhidev0: iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0