ProsI just received this and experienced none of the problems previously reported ! I am using it to switch an Apple Cinema 30" at the full 2560x1600 resolution between a Matrox Parhelia on a Asus-based home-brew and a Dell XPS 410.
ConsThe cable attachment is awkward ... I have it stretched to the limit, it would be better if the cables emerged at 180 degrees opposite sides instead of in parallel. Of course, I could always try an extension cable. Also the shape is somewhat awkward - a rectangular box would have been easier to stack, etc. I might mount it to the monitors transformer with double-stick tape just to keep it from flopping around
Review:The salesman explained that the product was updated since the original negative reviews. I expressed skepticism, but accepted his assurance of a 100% 21 day refund. Glad I did !