Someone

#
Section "InputDevice"
#
        Identifier      "TouchPad"
#
        Driver          "synaptics"
#
        Option    "CorePointer"
#
        Option  "Device"                  "/dev/psaux"
#
        Option  "Protocol"                "auto-dev"
#
        Option  "GuestMouseOff"      "false"
#
        Option  "LeftEdge"                "120"
#
        Option  "RightEdge"              "830"
#
        Option  "TopEdge"  "120"
#
        Option  "BottomEdge"            "650"
#
        Option  "FingerLow"              "14"
#
        Option  "FingerHigh"            "15"
#
        Option  "MaxTapTime"            "180"
#
        Option  "MaxTapMove"            "110"
#
        Option  "EmulateMidButtonTime"    "125"
#
        Option  "VertScrollDelta" "20"
#
        Option  "HorizScrollDelta"        "20"
#
        Option  "MinSpeed"                "0.5"
#
        Option  "MaxSpeed"                "1.25"
#
        Option  "AccelFactor"          "0.015"
#
        Option  "EdgeMotionMinSpeed"      "100"
#
        Option  "EdgeMotionMaxSpeed"      "200"
#
        Option  "UpDownScrolling" "1"
#
#       Option "CircularScrolling"      "1"
#
#       Option "CircScrollDelta"        "0.1"
#
#       Option "CircScrollTrigger"      "2"
#
EndSection