Dell OptiPlex 7070 - Technology and Components; DDR4 Memory Technology

Back view
1 External SMA antenna connectors (optional) 2 DisplayPort/HDMI 2.0b/VGA/USB Type-C Alt-Mode
(optional)
3 USB 3.1 Gen 2 ports (2) and USB 3.1 Gen 1 ports (1-top) 4 Release latch
5 Padlock ring 6 Network port
7 USB 3.1 Gen 1 port (supports, SmartPower On) 8 Service tag label
9 Kensington security cable slot 10 DisplayPorts (2)
11 Power adapter port
Chassis 9