Chapter 2 Installation
NET-1821VD2N
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Pin
Signal Name
1 GND
2 +12V
3 FAN_IO
CPUFAN1
～
CPUFAN3
4 FAN_PWM
Note: FAN_IO: fan speed impulse output; FAN_PWM: fan speed PWM control.
2. The board provides two 1x3Pin fan connectors (Pitch: 2.54mm); the pin definitions
are as follows:
Pin
Signal Name
1 GND
2 +12V
SYSFAN1
3 FAN_IO
Note: FAN_IO: fan speed impulse output.
Installing the CPU Cooling Fan
Please install the CPU as follows (refer to the figure below):
Before installing the CPU, please make sure that the power is off, to avoid
damaging the CPU.
Press the rod on the CPU slot and push rightward to make the rod break away
from the fixing buckle and then pull the rod upward.
Lift up the metal cover of the CPU slot and then remove the protective cover of
the CPU slot from the inner side of the upper cover by finger.
Align the concave on the CPU with the heave on the CPU socket and put the
CPU into the socket.
Close the metal cover of the CPU slot, push back the rod of the CPU slot and
then lock the fixing buckle.
