I bought this and an HDMI switch because I needed a way to switch a keyboard w/ mouse & monitor between 4 systems that only support DVI-D/HDMI. Standard 4 port KVM switches can run twice this much for standard VGA, DVI KVM'1 are over $100. This and a HDMI switch cost me $65 with cables (local cable supplier). I am actually going to buy another one along with another switch as my home office is getting overwhelmed with test systems.