Your point is well taken. My comment wasn't intended to stir things up. It's just that I know they're in here sometimes, based on past threads.  and typing in touchpad or keyboard, etc. was met with "We couldn't find a match for "touchpad".Update your search criteria and try again."  I ended up doing a number of searches to get to the link you just provided. When, I entered the service tag, it said- No results found.We couldn't find anything for your search. Please modify your search and try again. I went ahead and took the "not applicable enhancement" anyhow and it worked.  
I bought a used M6500 and found that I am unable to make adjustments to the touchpad such as scrolling speed or two finger scrolling (just examples), lighting on the keyboard, use of the jog shuttle in the Windows Device Manager. I can find no Dell files on the hard drive whatsoever. I have another m6500 which is unusable right now but has all those controls. Anyone have any idea?    
M6500 has no controls on touchpad, jog shuttle, keyboard