Processor, Front, And Rear Chassis (4-Pin) Fan Headers; Chassis Intrusion Header; Lpc Debug Header - Intel DQ77MK Specification

Table 24. S/PDIF Header
Pin Signal Name
1 Ground
2 S/PDIF out
3 Key (no pin)
4 +5 V DC
Table 25. Chassis Intrusion Header
Pin Signal Name
1 Intruder#
2 Ground
Table 26. Processor, Front, and Rear Chassis
(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.
Table 27. LPC Debug Header
Pin Signal Name
1 CK_33M_DEBUG
3 PLTRST#
5 LAD0
7 LAD2
9 GND
11 +3.3 V
13 Key (no pin)
Pin Signal Name
2 GND
4 LFRAME#
6 LAD1
8 LAD3
10 GND
12 +3.3 V
14 +3.3 V
Technical Reference
55