Intel DX79SI Intel Desktop Board DX79SI Technical Product Specification - Page 52
Table 19., USB 3.0 Connector, Table 20., Chassis Intrusion Header, Table 21., Processor, Front
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Intel Desktop Board DX79SI Technical Product Specification Table 19. USB 3.0 Connector Pin Signal Name 1 Vbus 2 IntA_P1_SSRX− 3 IntA_P1_SSRX+ 4 GND 5 IntA_P1_SSTX− 6 IntA_P1_SSTX+ 7 GND 8 IntA_P1_D− 9 IntA_P1_D+ 10 ID 11 IntA_P2_D+ 12 IntA_P2_D− 13 GND 14 IntA_P2_SSTX+ 15 IntA_P2_SSTX− 16 GND 17 IntA_P2_SSRX+ 18 IntA_P2_SSRX− 19 Vbus Description Power USB3 ICC Port1 SuperSpeed Rx− USB3 ICC Port1 SuperSpeed Rx+ Ground USB3 ICC Port1 SuperSpeed Tx− USB3 ICC Port1 SuperSpeed Tx+ Ground USB3 ICC Port1 D− (USB2 Signal D−) USB3 ICC Port1 D+ (USB2 Signal D+) Over Current Protection USB3 ICC Port2 D+ (USB2 Signal D+) USB3 ICC Port2 D− (USB2 Signal D−) Ground USB3 ICC Port2 SuperSpeed Tx+ USB3 ICC Port2 SuperSpeed Tx− Ground USB3 ICC Port2 SuperSpeed Rx+ USB3 ICC Port2 SuperSpeed Rx+ Power Table 20. Chassis Intrusion Header Pin Signal Name 1 Intruder# 2 Ground Table 21. Processor, Front and Rear Chassis, and Auxiliary (4-Pin) Fan Headers Pin Signal Name 1 Ground (Note) 2 +12 V 3 FAN_TACH 4 FAN_CONTROL Note: These fan headers use Pulse Width Modulation control for fan speed. 52
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