Chapter 2 Installation
EC5-1817LNAR
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Fan Connector
The board provides one 1x4Pin CPU fan (CPUFAN1, Pitch: 2.54mm) and one 1x3Pin
system fan (SYSFAN1, Pitch: 2.54mm). Pay attention to the following three issues
when using the fan socket:
The current for fan shall not exceed 700mA (12V);
Please confirm that the fan cable complies with the socket cable. Power cable
(usually red) is in the middle position. In addition, please confirm the earth
cable (usually black) and fan speed output impulse signal cable (other colors).
Some fans have no speed detection while the output of the cable is up to 12V.
These substandard connections will destroy the CPU card. It is recommended to
use a fan with speed detection.
Adjust the fan’s airflow to the direction of heat venting.
Pin
Signal Name
1 GND
2 +12V
3 FAN_IO
CPUFAN1
4 FAN_PWM
Note: FAN_IO: fan speed impulse output; FAN_PWM: fan speed PWM control.
Pin
Signal Name
1 GND
2 +12V
SYSFAN1
3 FAN_IO
Note: FAN_IO: fan speed impulse output.
TPM Pin Header
The board provides one 2x10TPM pin header; PIN4 is NA, Pitch: 2.54mm.
1 9
2
1
2 0
J4
