[Benly-30] 1/8" 3.5mm Stereo Plug / Male / 4 Position to Dual 3 Position 3.5mm Headset Splitter Adapter / Headphone Microphone Splitter - 4 Pin / 4 Pole 0.55feet (17cm) Wyr-av-58 [Benly-30] 1/8" 3.5mm Stereo Plug / Male / 4 Position to Dual 3 Position 3.5mm Headset Splitter Adapter / Headphone Microphone Splitter - 4 Pin / 4 Pole 0.55feet (17cm) Wyr-av-58 One jack accepts mono-mic input, and the other outputs stereo for headphones Allows the use of older audio accessories with newer computers Top quality and made by environment-friendly material