Dell OptiPlex 9010 (Mid 2012) - Manual (Page 4)

Small Form Factor — Front and Back View
Figure 4. Front and Back View Of Small Form Factor
1. optical drive
2. optical-drive eject button
3. power button, power light
4. USB 2.0 connectors (2)
5. USB 3.0 connectors (2)
6. microphone connector
7. headphone connector
8. drive activity light 9. padlock ring
10. security-cable slot
11. power connector
12. power supply diagnostic button
13. power supply diagnostic light
14. back panel connectors
15. expansion-card slots (2)
4