XF86Config-4
An example for the Trackman Marble+ in [XF86Config-4]
Section "InputDevice"
Identifier "Trackball" Driver "mouse" Option "CorePointer" Option "Device" "/dev/psaux" Option "Protocol" "["MouseManPlusPS"]/2" Option "Emulate3Buttons" "false" Option "["ZAxisMapping"]" "4 5"
