Chapter 2 Installation
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EC7-1818CLD2NA
Fan Connector
The board provides one 1x4Pin CPU fan connector (CPUFAN1, Pitch: 2.54mm) .Pay
attention to the following three issues when using the fan socket:
The current for fan shall not exceed 500mA (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, so
using 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.
Power Connector
1. ATX power connector, adopting 20pin connector (Pitch: 4.2mm).
Pin
Signal Name
Pin
Signal Name
1 +3.3V 11 +3.3V
2 +3.3V 12 -12V
3 GND 13 GND
4 +5V 14
PS_ON#
5 GND 15 GND
6 +5V 16 GND
7 GND 17 GND
8 PWROK 18 -5V
9 +5VSB 19 +5V
PWR3
10 +12V 20 +5V
