It's called a KVM (Keyboard-Video-Mouse) Switch. <a href = "http://catalog.belkin.com/IWCatProductPage.process?Merchant_Id=&Section_Id=56&pcount=&Product_Id=134809#">Belkin</a> has one for $59.99. That's jus tthe first one I found, I don't know if that's the typical price.