I came into the SP3 world after many hours researching to make sure that dual external monitors was a possibility, specifically without using USB-powered "external video cards". However, after following directions that people have posted before I have the below setup, and only one external monitor is being displayed. System: Surface Pro 3 i7 / 8GB / 512GB SSD Microsoft Surface Docking Station 2x HP LA2206x Monitors StarTech Triple Head DisplayPort 1.2 Multi Monitor MST Hub StarTech Mini-DP to DP Adapter cable Plugged in like so: Docking Station -> Mini-DP to DP Cable -> MST Hub -> Output 1=Monitor #1, Output 2=Monitor #2 The Surface continues displaying on its screen, and Monitor #1 gets output. Monitor #2 seems like it tries to initialize (I hear the "da-dump" sound from the Surface when it gets plugged in/unplugged) but no video output. I have tested the MST Hub on another laptop (HP Elitebook Folio 9470m) and both external monitors display without issue. The only difference between the two setups is the Mini-DP to DP adapter cable is not required/cant be used for the setup on the 9470m, as it has a full DP port on it. Any help would be appreciated, thanks!