Motherboard front audio cable

Recently, I want to use headphones on the company's machines and connect them to the front-end plug-in without response and sound. Received from the backend and responded with sound. It is estimated that the audio cable of the chassis and the motherboard is not properly connected. The figure below shows how to open the chassis: My motherboard is 8i945p-g. The red circle is the same as that of my motherboard.

The method for checking the front-end audio/video line interface of the gigabyte motherboard is as follows:

Connect to later by ID ~~ Invalid! I don't know where the problem is! Failure sense ~~ Resentment ~~

After Google, many people have encountered this problem!

The front audio line is green and each line is colored. If the motherboard manufacturer wants to change his mind, do you have to design the socket into different colors? You are a motherboard manufacturer. If you have set it, we believe that the downstream chassis manufacturers will follow your standards!

Insert it to the end first.