The specific steps to solve the installation direction of the computer case fan are as follows:

1. First, install the case fan in the yellow circle in the picture below. The fan is installed on the inside of the case, with the fan logo facing the case. in. Plug the fan cable into the "system fan" pin on the motherboard. The three-pin and four-pin connectors are the only connectors. Just make sure to align them with the buckles. ?

2. The picture below is the front face of the chassis fan, the suction side, which can also be said as the "trademark side". This side should be installed toward the inside of the chassis.

3. The picture below is the back of the chassis fan, which is the air outlet side. This side should be installed facing the outside.

4. The following figure shows the air inlet and outlet effect of the chassis after successful installation.