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Dell Precision Tower 3620 Owner's Manual

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System board components

Figure 1. Components of the system board
System board components
  1. PCI express x16 slot (wired as x4)
  2. PCI express x4 slot
  3. PCI slot
  4. PCI express x16 Gen 3 slot
  5. line-in connector
  6. USB 3.0 connector
  7. HDMI connector
  8. serial port connector
  9. 2 x DisplayPort connector
  10. USB 2.0 with network connector
  11. keyboard/mouse connector
  12. intrusion switch connector
  13. P2 power connector
  14. system fan connector
  15. CPU socket
  16. CPU fan connector
  17. coin cell battery
  18. memory slot
  19. front power switch connector
  20. 8-pin power connector
  21. SATA 1 connector
  22. SATA 2 connector
  23. internal USB connector
  24. hard drive and optical drive power cable connector
  25. OS debug header for debug
  26. USB 3.0 connector
  27. Thunderbolt header
  28. M.2 SSD slot
  29. SATA 0 connector
  30. front I/O connector
  31. SATA 3 connector
  32. password reset jumper
  33. service Mode jumper connector
  34. speaker connector
  35. CMCLR jumper
  36. CLINK header
  37. LPC Debug header for debug

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