Yes, DisplayLink software is required to use more than one external monitor with the Triple 4K Display Docking Station.

• The HDMI and DisplayPort ports in the Display 2 and Display 3 groups only output video when DisplayLink software is installed.
• DisplayLink software is required for triple monitor output.
• The Display 1 HDMI port uses DP Alt Mode.

Download and install DisplayLink software on your computer at https://satechi.com/pages/displaylink-instructions.