One Plug In, Multiple Expandability The Universal Docking Station is an expansion unit designed for notebook which have extra connectivity demands. With only one USB port required, computer can easily connect to numerous devices. It?s compatible with USB 1.1, Windows OS and Mac OS. Moreover, a raised platform design provides comfort typing and improved notebook airflow for cooling. VGA Adds an extra VGA port for hook up to an additional display - PC monitor or TV. DVI Digital video connection extends high definition graphics to an extra display. USB 2.0 port Adds additional USB 2.0 ports for greater connectivity with extra devices and accessories. High power USB You can never have enough USB ports - the most popular connection standard that charges up just about any device. Ethernet Get one more broadband port for connection sharing, splitting or extending. Audio port Provides an additional audio jack for greater convenience. MIC port Extra mic port delivers greater voice possibilities and connectivity.