# The touchpad has the number 11
# The enable property is the 133. It is a boolean and I want it to be False, so 0.
xinput set-prop 11 133 0
This way I can still use the Trackpoint and a External mouse.
I had to discover the part above by myself and does not appear to be on the official wiki:
Some interesting options from the official wiki to make the trackpoint faster:
echo -n 120 > /sys/devices/platform/i8042/serio1/serio2/speed
echo -n 215 > /sys/devices/platform/i8042/serio1/serio2/sensitivity