SIIG's Mini-DP Video Dock with USB 3.0 LAN Hub ? Black allows you to convert your Mini DisplayPort video source to either HDMI or DisplayPort output. It ensures your Mini DisplayPort-equipped computer such as MacBook or Surface Pro series computers to be compatible with HDMI or DisplayPort display. Two USB 3.0 ports with SuperSpeed data transfer rate of up to 5Gbps are provided to support smooth and efficient connections. One Gigabit Ethernet port is also available to enable fast and reliable wired network connection. Compact and lightweight design with no external power adapter required makes it super portable to carry. This Mini-DP Video Dock with USB 3.0 LAN Hub is a versatile tool to expand and enhance your computer's connectivity performance for use at home, in the office or on the road.