Dell OptiPlex 3020 - System Board Components Diagram

System Board Components
The following image displays the system board layout.
1. PCI Express x16 connector
2. PCI Express x1 connector
3. intrusion-switch connector
4. PS/2, serial connector
5. power connector
6. processor socket
7. CPU fan connector
8. memory module connectors
9. HDD LED & chassis detect connector
10. power switch connector
11. coin-cell battery
12. system power connector
13. system fan connector
14. RTC reset jumper
15. ODD SATA connector
16. HDD SATA connector
17. power connector
18. front i/o connector
19. internal speaker connector
20. password reset jumper
21. front audio connector
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