Solved! Can I use blue jack (line in) for my headphones?

Dec 12, 2018
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I wish to use another audio jack in for my headphones since I wish to use headphones and speakers at the same time.
Note: My front audio jacks are broken. So using the rear one.
My jacks are 3.5mm. (One is Blue,Green and pink).
i want to plug in my headphones in the blue. will it work? like, can i use headphone and speakers at the same time by doing this?