– Specifically for headsets with mic capability . Unique U shape design . Overcomes the limitation of some laptop audio ports, by turning a single 4-position 3.5mm audio port into two distinct 3 Position 3.5mm audio ports, allowing you to connect a microphone as well as external speakers. Allows the use of older audio accessories with newer computers Can be used with any portable device that uses a 4 position 3.5mm jack Light Weight, easy to take along with you