I have installed the Elan touchpad driver
I can't get it to scroll correctly.
In addition an Elan touchpad .exe run box comes up at every boot which does nothing when Run. I finally browsed to it in the Programs folder and deleted that .exe file so it wouldn't pop up at every start.
It shows installed in the Device Manager, however doesn't have the functions I had in the Samsung factory install. This and the sound driver don't seem to work right when installed, as though there is more software needed that isn't on the Downloads page at Support for NP-RF511