Dell OptiPlex 9010 (Mid 2012) - Manual (Page 6)

Ultra Small Form Factor — Front and Back View
Figure 6. Front and Back View Of Ultra Small Form Factor
1. optical drive
2. optical-drive eject button
3. power button, power light
4. drive activity light
5. headphone connector
6. microphone connector
7. USB 3.0 connectors (2)
8. Wi-Fi antenna (optional)
9. network activity light
10. captive thumbscrew
11. padlock ring
12. security-cable slot
13. power connector
14. line-out connector
15. line-in/microphone connector
16. VGA connector
17. DisplayPort connectors (2)
18. serial connector
19. USB 3.0 connectors (2)
20. USB 2.0 connectors (2)
21. network connector
22. link integrity light
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