If a laptop with USB-C Alternate (Thunderbolt 3) is connected to the display via USB-C, video, network (LAN) and power are transmitted via the USB-C interface in addition to USB (the laptop is accessible from the Dell display power supply).If a laptop with USB-C Alternate (Thunderbolt 3) is connected to the display via USB-C, video, network (LAN) and power are transmitted via the USB-C interface in addition to USB (the laptop can be accessed from the power supply of the Dell display). The docking station is integrated into the monitor and you only need one cable, a USB-C cable.