This GEFEN Extendit 4X1 VGA over DVI-I plus USB Type A B Switcher is a must-have for anyone who needs to connect multiple devices to a single display. With a connection split/duplication of 4:1, this switcher allows you to switch between four different devices' VGA over DVI-I plus USB Type B with ease. The switcher supports VGA over DVI-I plus USB Type B connectors, making it easy to connect your devices. Additionally, this switcher is powered wiith a hefty 12VDC Power Supply, ensuring that all your devices receive the necessary power to function. Whether you're looking to connect your computer, tablet, or networking device, this switcher is the perfect solution. So, if you're looking for a reliable and efficient way to connect your devices, look no further than the GEFEN Extendit 4X1 VGA over DVI-I plus USB Type A B Switcher.