This is a used unit and ViewSonic did have some issues
20 May 2010
Summary: Support could be a lot better. The web site is very hard to find anything in. Best to just search the net and hope for a hit at there Site. You may not find to there.Still working on a driver for the unit. Have tried Viewsonic's site now going to just go to the paid for Driver Site I normally use. With the price I paid I did not expect great. Just average and thats what I got.