User manual

Chapter 2 Installation
- 16 - EC0-1815V2NAR
4-pin CPU Fan Connector
Pin Signal Name
1 GND
2 +12V
3 FAN_IO
CPUFAN1
Pitch: 2.54mm
4 FAN_PWM
Note: FAN_I: fan speed impulse output; FAN_PWM: fan speed PWM control.
Installing the CPU
Please install the CPU as follows (refer to the figure below):
 Align the notches on the CPU with tabs on the CPU socket and put the CPU into
the socket.
 When the CPU is fully seated in the socket, close the upper cover on CPU
socket and then lock the CPU into place by the clip.
Installing the CPU Fan
Please install the CPU fan as follows: (refer to the figure below):