1. PCI slot (slot 6) 2. PCIe x16 slot (PCIe 2.0 wired as x4) (slot 5)
3. PCIe 3.0 x16 slot (slot 4) 4. PCIe 2.0 x1 slot (slot 3)
5. PCIe 3.0 x16 slot (slot 2) 6. PCIe x16 slot (PCIe 3.0 wired as x8) (slot 1)
7. intrusion-switch connector 8. DIMM slots (available only when optional
second processor is installed)
9. CPU2 fan connector 10. processor socket 2
11. DIMM slots (available only when optional
second processor is installed) 12. front-panel audio connector
13. CPU1 fan connector 14. CPU1 power connector
15. HDD1 fan connector 16. system-fan connector
17. DIMM slots 18. processor socket 1
19. system-fan 1 connector 20. DIMM slots
21. thunderbolt sideband connector 22. HDD temp sensor
23. system-fan connector 24. internal speaker connector
25. remote power button connector 26. front panel I/O connector
27. USB 3.0 front panel connector 28. internal USB 2.0 connector for flexbay
29. password jumper 30. main power connector
31. coin-cell battery 32. SATA connectors (HDD-HDD3 & SATA0–1)
33. internal USB type A connector 34. CPU2 power connector
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