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1. CPU Socket 1150
13. USB 2.0 Headers
25. M.2 Slot
2. Intel Z97 Southbridge
14. USB 3.0 Headers
26. Front Panel Audio Connector
3. CPU Fan Headers (1 amp PWM)
15. CMOS Battery
27. EVGauge
4. DDR3 Memory DIMM Slots 1-4
16. CMOS Reset Button
28. Back Panel Connectors (Figure 2)
5. 24-pin ATX power connector
17. Power Button
29. 8 pin EPS Connector
6. Fan Headers (1 amp DC)
18. Reset Button
30. Supplemental PCI-E 6pin Power
7. PCI-E Disable Dipswitches
19. PC Speaker
31. Probe It Header
8. Intel Sata 6G/3G Ports
20. PCI-E Slot 16x/8x
32. BIOS Selector Switch
9. Marvell Sata 6G Ports
21. PCI-E Slot 8x/4x
33. Removable BIOS Chip
10. S/PDIF Out
22. PCI-E Slot 4x (16x physical)
34. Debug Jumper
11. Front Panel Connectors
23. PCI-E Slot 1x (16x physical)
12. Debug LED / CPU Temp Monitor
24. PCI-E Slot 1x
PCI-E Lane Distribution
PE1 – x16 (x8 if PE2 is used)
PE2 – x8 (x4 if PE3 is used)
PE3 – x4
PE4 – x1
PE5 – x1 (x16 Physical)