Ieee 1394A Header; Sata Connectors; Usb 2.0 Headers; Chassis Intrusion Header - Intel DX79TO Specification

Table 15. IEEE 1394a Header
Pin Signal Name
1 Data A (positive)
3 Ground
5 Data B (positive)
7 +12 V DC
9 Key (no pin)
Table 16. SATA Connectors
Pin Signal Name
1 Ground
2 TXP
3 TXN
4 Ground
5 RXN
6 RXP
7 Ground
Table 17. USB 2.0 Headers
Pin Signal Name
1 +5 V DC
2 D−
3 D+
4 Ground
5 Key (no pin)
Table 18. Chassis Intrusion Header
Pin Signal Name
1 Intruder#
2 Ground
Table 19. Processor, Front and Rear Chassis, and Auxiliary
(4-Pin) Fan Headers
Pin Signal Name
(Note)
1 Ground
2 +12 V
3 FAN_TACH
4 FAN_CONTROL
Note: These fan headers use Pulse Width Modulation control for fan speed.
Pin Signal Name
2 Data A (negative)
4 Ground
6 Data B (negative)
8 +12 V DC
10 Ground
Technical Reference
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