Installation Instructions
EC3-1820V2NA
· 17 ·
2.14 GPIO Port
Pin
Signal Name
Pin
Signal Name
1 GPIO1 2 GPIO9
3 GPIO2 4 GPIO10
5 GPIO3 6 GPIO11
7 GPIO4 8 GPIO12
9 GPIO5 10 GPIO13
11 GPIO6 12 GPIO14
13 GPIO7 14 GPIO15
15 GPIO8 16 GPIO16
17 +5V 18 +5V
GPIO1
(pitch: 2.0mm)
19 GND 20 GND
Note: The factory default is that the Pin1, Pin3, Pin5, Pin7, Pin9, Pin11, Pin13 and
P15 of the connector are GPIO input; Pin2, Pin4, Pin6, Pin8, Pin10, Pin12, Pin14 and
Pin16 are GPIO output. The factory default status is high level, and the voltage range
of input/output signals is 0-5V.
2.15 Fan Connector
This motherboard provides one 1×2Pin CPU fan connector (CPUFAN1, pitch:
1.25mm). Please pay attention to the following three points when using the fan
connector:
The fan current should not be larger than 500 mA (12V).
Please confirm that the fan cable complies with the socket cable. The
socket groove facing us, the first pin from left is the ground, and the
second pin is 12V power supply pin; Please note the matching when
assembling the product.
Adjust the fan’s airflow to the direction of heat venting.