PC Connectivity:
Thunderbolt 3 (USB Type-C)
Video ports:
1 x mini DisplayPort (DP 1.2)
1 x DisplayPort (DP 1.2)
1 x HDMI (HDMI 1.4a)
1 x VGA
1 x Thunderbolt 3 (USB Type-C) port
Audio ports:
1 x headset connector
1 x microphone connectors
Network ports
1 x Gigabit Ethernet (RJ-45)
USB ports:
2 x USB 3.0 ports (front), one with PowerShare
1 x USB 3.0 (rear)
2 x USB 2.0 (rear)
1 x Thunderbolt 3 USB Type-C (rear)
https://www.dell.com/support/kbdoc/en-uk/000123995/how-to-use-and-troubleshoot-dell-thunderbolt-dock-tb16