StarTech MUYHSMFF Headset Splitter Adapter is a headset Splitter Adapter features one 3.5mm Male (TRRS) and two 3.5mm (TRS) Female connectors enabling you to add a mono microphone input as well as a stereo output to your PC or Laptop through a single 3.5mm audio port. While some of the newer laptops from Apple and Dell feature only a single (4-position) 3.5mm audio port to support both audio input and output this innovative headset splitter adapter breaks the audio port out into two distinct ports - one that can be used for a microphone input connection and the other for connecting external (output) speakers. The headset splitter features a compact and sturdy design to deliver the perfect solution for applications that require portability and takes up very little space in your laptop bag. This adapter is not a headphone splitter/Y-cable. Model number MUYHSMFF Product Name StarTech MUYHSMFF Headset Splitter Adapter Product Type Audio Cable American Wire Gauge 28 AWG Jacket Material PVC Shielding Material Nickel Connector on First End 2 x 3-pin Mini-phone Female Stereo Audio Connector on Second End 1 x 4-pin Mini-phone Male Stereo Audio Plating Nickel-plated Connectors Color Black