The individual HV systems can accommodate from 4 to 7 users. Each user has their own FSR HV-T3 table box to plug into. Each table box contains a pullout HDMI cable and an AC outlet. A single push of a button on each T3 is all that is needed to display the laptop or iPad's desktop information onto the main display.A black HDMI cable is included with the system with 1 switch / 1 LED on the HV-T3 Table Control unit.