Notes
How to speed-up Dell D630 ALPS Touchpad on Debian Jessy
$ xinput --set-prop 11 "Synaptics Move Speed" 24 24 0 0
or
$ xinput --set-prop 11 339 24 24 0 0
$ xinput --set-prop 11 "Synaptics Move Speed" 24 24 0 0
or
$ xinput --set-prop 11 339 24 24 0 0