6 inch 4-pin 3.5mm Male to Dual 3.5mm Female perfect solution for connecting a set of headphones and a microphone to a single 4-pin 3.5mm port on a laptop, tablet, cellphone or other mobile device The 3.5mm port on the device must be a 4-pin 3.5mm port capable of supporting a mono audio input and a stereo audio output Breakout Adapter Y-Cable