Connectors and Jumper Blocks
7.5.6
Back Panel I/O Connectors
Figure 28. Intel
7.6
Fan Headers
The server board supports three general-purpose (system) fan headers (J5K1, J5K2, J5K3). All
fan headers have the same pin-out.
Table 63. 8-pin Fan Headers Pin-out (J5K1, J5K2, J5K3)
Pin
Signal Name
1
GND
2
+12V
3
TACH1
4
PWM1
1
GND
2
+12V
3
TACH2
4
PWM2
7.7
Chassis Intrusion Header
A 1x2 pin header (J1B2) is used in chassis that support a chassis intrusion switch. This header
is monitored by the Intel
110
®
Server Board X38ML Back Panel I/O connectors
Type
Power
GROUND is the power supply ground
Power
Fan Power +12VDC
Sense
FAN_TACH signal to monitor the fan speed.
Control
Pulse Width Modulation – Fan speed Control signal
Power
GROUND is the power supply ground
Power
Fan Power +12VDC
Sense
FAN_TACH signal to monitor the fan speed
Control
Pulse Width Modulation – Fan speed Control signal
®
ICH9R. The pin-out definition for this header is shown below.
Table 64. Chassis Intrusion Header (J1B2) Pin-out
Pin
1
FP_INTRUDER_HDR_P1
2
FP_INTRUDER_HDR_N
Intel order number E15331-006
Description
Signal Name
Intel® Server Board X38ML
Revision 1.3