It works like a champ. No need to install the (optional) software, no need to plug it in-- just hook up the cables and you're good to go. You just press a button to switch between the two devices.

Only thing to know is that there's nothing "automatic" about this-- you need to do the switching yourself. The word "automatic" refers to another way you can use this switch-- to hook two PCs up to a single device. I don't need this capability, so I haven't tried it.

Good product.