Section "InputDevice"
        Identifier "Configured Mouse"
        Driver "mouse"
        Option "CorePointer"
        Option "Name" "Logitech USB Trackball"
        Option "Protocol" "auto"
        Option "Device" "/dev/input/mice"
        Option "Buttons" "5"
        Option "Emulate3Buttons" "on"
        Option "EmulateWheel" "true"
        Option "EmulateWheelButton" "8"
        Option "YaxisMapping" "4 5"
        Option "XaxisMapping" "6 7"
        Option "ButtonMapping" "1 9 3 8 9"
EndSection