“Why does picture of Lenovo 510a show RED, GREEN and Blue Jack on the upper back of the tower and mine only has Green jack? Thanks.”

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• There are several different configurations of this model. Your configuration has just the one RCA jack on the back. You have an combo 3.5mm audio jack on the front of your configuration that has the ability to support audio out (earphones and speakers) as well as audio in (microphones).

  Answered by Lenovo Product Expert 5 years ago

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