User guide

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1. CPU Socket 2011-3 13. USB 3.0 Headers 25. EVGauge
2. Intel X99 Southbridge 14. USB 2.0 Headers 26. Thunderbolt GPIO Connector
3. CPU Fan Header (1 amp PWM) 15. CMOS Reset Button 27. MCU Firmware update connector
4. DDR4 Memory DIMM Slots 1-8 16. Power Button 28. Back Panel Connectors (Figure 2)
5. 24-pin ATX power connector 17. Reset Button 29. 8 pin EPS Connector
6. Fan Headers (1 amp DC) 18. PC Speaker 30. Supplemental PCI-E 6pin Power
7. PCI-E Disable Dipswitches 19. PCI-E Slot 16x/8x 31. GPU Link
8. Intel Sata 6G RAID Ports 20. PCI-E Slot 8x 32. Probe It Header
9. Intel Sata 6G AHCI Ports 21. PCI-E Slot 4x 33. BIOS Selector Switch
10. Front Panel Connectors 22. M.2 (Type2) 34. MCU Turbo Switch
11. Debug LED / CPU Temp Monitor 23. M.2 (Type3) 35. Removable BIOS Chip
12. CMOS Battery 24. Front Panel Audio Connector
PCI-E Slot Breakdown
PCI-E Lane Distribution (40 Lane Processor)
 PE1 – x16 (x8 if PE2 is used)
 PE2 – x8
 PE3 – x8
 PE4 – x16 (x8 if PE3 is used)
 PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH)
 PE6 – x8
PCI-E Lane Distribution (28 Lane Processor)
 PE1 – x16 (x8 if PE2)
 PE2 – x8
 PE3 – x8 (Slot is *NOT* functional with a 28 lane processor.)
 PE4 – x8
 PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH)
 PE6 – x4