![What's the fourth light for? There are 4 indicator lights, and I just don't know what the fourth could be. It turns on randomly and I have no clue what triggers it. ( What's the fourth light for? There are 4 indicator lights, and I just don't know what the fourth could be. It turns on randomly and I have no clue what triggers it. (](https://preview.redd.it/d62w49xvm6351.jpg?auto=webp&s=712dd56bf9d8d6b5c7ab8a40c7f6a264bef5004f)
What's the fourth light for? There are 4 indicator lights, and I just don't know what the fourth could be. It turns on randomly and I have no clue what triggers it. (
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