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ASUS X99-A
1-5
Chapter 1
Layout contents
Connectors/Jumpers/Buttons and switches/Slots Page
1. DDR4 DIMM slots 1-7
2. CPU, CPU optional, extension, and chassis fan connectors
(4-pin CPU_FAN, 4-pin CPU_OPT, 5-pin EXT_FAN, 4-pin CHA_FAN1-4 )
1-33
3. LGA2011-v3 CPU socket 1-6
4. ATX power connectors (24-pin EATXPWR; 8-pin EATX12V) 1-34
5. MemOK! button 1-17
6. Intel
®
Serial ATA 6 Gb/s connectors (7-pin SATA6G_12, SATA 6G_34,
SATA 6G_5, SATA 6G_6/SATAEXPRESS, SATA 6G_78, SATA6G_910)
1-29
7. USB 3.0 connectors (20-1 pin USB3_12, USB3_34) 1-31
8. EPU switch 1-19
9. M.2 Socket 3 1-30
10. TPU switch 1-18
11. T_Sensor connector (2-pin T_SENSOR1) 1-37
12. Chassis intrusion connector (4-1 pin CHASSIS) 1-38
13. System panel connector (20-8 pin PANEL) 1-35
14. DirectKey connector (2-pin DRCT) 1-36
15. USB 2.0 connectors (10-1 pin USB1112; USB1314) 1-32
16. EZ XMP switch 1-20
17. Clear RTC RAM jumper (3-pin CLRTC) 1-21
18. TPM connector (20-1 pin TPM) 1-36
19. Q-Code LEDs 1-25
20. Reset button 1-16
21. Power-on button 1-16
22. Serial port connector (10-1 pin COM) 1-38
23. Front panel audio connector (10-1 pin AAFP) 1-39
24. Digital audio connector (4-1 pin SPDIF_OUT) 1-30
25. CPU Over Voltage jumper (3-pin CPU_OV) 1-22
26. Thunderbolt header (5-pin TB_HEADER) 1-37