Turns a 35mm audio output port into two distinct ports one 35mm headphone jack and one 35mm microphone port have you recently purchased a newer laptop or ultrabook and now you cant figure out where to plug in your favorite headset most new laptops and ultrabooks come equipped with a single 35mm 4 position 4pin audio port that supports both audio input and output a great number of headsets on the market come equipped with two separate headphone and microphone connectors that are no