Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Well at least it works as a normal keyboard now.

I am a Windows user and concur with other bad reviews on this product. I have had similar problems. Most of the extra keyboard functions do nothing. I have had problems with my mouse that the click would work but the mouse movement would not. Ever since installing the product my OS takes 10 - 15 seconds longer to boot-up. To get everything working to an acceptable state I have had to do a lot of re-installing and tweaking. Currently I have everything setup so that it works fine minus all the extra key functionality (bummer). Maybe if I tried a little harder I could get the extra keys working, but its not worth putting more time into it--it does what I need it to do. FYI I am a Software Engineer with a CS degree and I found this difficult to impossible to get working as it should. Kensington!!! You need a patch for this. ...and... It better not break mouse functionality again!!!!