Dell D10U - Back View

Back view
1 External antenna connectors (optional) 2 DP/HDMI2.0b/VGA port (optional)
3 USB 2.0 port 4 Cable holder
5 USB 3.1 Gen 1 ports (2) 6 Padlock ring
7 Network port 8 USB 2.0 port (supports SmartPower On)
9 Service tag 10 Kensington security cable slot
11 DisplayPort 12 HDMI port
13 Power connector port
10 Chassis