2. SYS_FAN 3-pin system cooling fan connector
3. CPU_FAN 4-pin CPU cooling fan connector
4. DDR3_1~4 240-pin DDR3 Module slots
5. ATX_POWER Standard 24-pin ATX power connector
6. USB3F Front panel USB 3.0 header
7. CASE CASE open header
8. ME_UNLOCK ME unlock header-for factory use only
9. SATA1~6 Serial ATA 6Gb/s connectors
10. F_PANEL Front panel switch/LED header
11. F_USB1 Front panel USB 2.0 header (Gray header supports EZ Charger)
12. F_USB2~3 Front panel USB 2.0 headers
13. TPM Trusted platform module header
14. LPT Parallel port header
15. SPDIFO1 SPDIF out header
16. SPK Speaker header
17. CIR1 Consumer Infrared
18. COM Onboard serial port header
19. CLR_CMOS Clear CMOS jumper
20. PCIEX16_S PCI Express Gen2 x4 slot
21. F_AUDIO1 Front panel audio header
22. PCI1 32-bit add-on card slot
23. PCIE1 PCI Express Gen2 x1 slot
24. PCIEX16 PCI Express Gen3 x16 slot for graphics interface
25. ATX12V1 4-pin +12V power connector