Intel DX79TO User Manual

Technical Reference
49
Table 15. IEEE 1394a Header
Pin Signal Name Pin Signal Name
1 Data A (positive) 2 Data A (negative)
3 Ground 4 Ground
5 Data B (positive) 6 Data B (negative)
7 +12 V DC 8 +12 V DC
9 Key (no pin) 10 Ground
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
1 Ground
(Note)
2 +12 V
3 FAN_TACH
4 FAN_CONTROL
Note: These fan headers use Pulse Width Modulation control for fan speed.

Intel DX79TO Specifications

General

Form Factor	ATX
Chipset	Intel X79
Socket	LGA 2011
Memory Type	DDR3
Max Memory	64GB
PCIe 2.0 x1 Slots	2
PCI Slots	1
SATA 6Gb/s	2
SATA 3Gb/s	4
USB 3.0 Ports	2
LAN	Intel 82579V
Memory Slots	8