Back Panel I/O Connectors; Fan Headers; Chassis Intrusion Header; Figure 28. Intel ® Server Board X38Ml Back Panel I/O Connectors - Intel X38ML - Server Board Motherboard Technical Manual

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