The mstmdp123dp mini displayport 12 to displayport mst hub lets you create a high quality multi monitor setup without having to install a multi head video card by connecting up to three displayport monitorsprojectors to a single mini displayport 12 output on your ultrabook laptop or desktop computer the hub splits the single output into three separate signals enabling you to extend your desktop to increase workspace or mirror your primary display to a different monitor or projector with separa