Fan
For the fan compatible with IQ9, refer to Peripheral Compatibility List.
When using IQ9 in high-load or high-performance scenarios, use cooling measures to ensure stable performance of the device. Otherwise, performance may fluctuate due to high CPU temperatures.
Install the fan
1. Paste the two thermal pads to the corresponding positions on IQ9.
2. Connect the fan cable.
3. Install the fan onto the IQ9 and secure it in place.
:::warning
We recommend that you do not remove the fan after installing it on your IQ9. Removal will cause the fan's push pins and thermal pads to degrade and may result in product damage. If the push pins are damaged, deformed, or not clipping securely, stop using the fan. :::
Control the fan
The fan of IQ9 controls the speed according to the CPU temperature. You can also run the following commands on IQ9 to control the fan speed. 0 and 255 indicate the minimum and maximum speed of the fan, respectively.
echo 100 > /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1
echo 255 > /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1
echo 0 > /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1
Before setting the fan speed to a fixed value, disable CPU thermal management using the systemctl stop oem-tangshan-IQ9-thermal.service command.