Dell OptiPlex 5260 All-in-One - Back chassis view

Back chassis view
1 Back cover 2 Security lock slot
3 Base cover 4 Stand
1 DisplayPort 2 Network port
3 USB 2.0 ports with Power on/ Wake-up support 4 USB 3.1 Gen 1 ports
5 Audio out port 6 Power connector port
7 Power supply diagnostic light
Chassis 13