The MUYHSMFF headset adapter features two 3.5mm 3-position ports that provide a separate headphone and microphone connection that can be connected to the single audio port on your laptop. A great number of headsets on the market come equipped with two separate headphone and microphone connectors that are not compatible with this new configuration. Most new laptops and Ultrabooks come equipped with a single 3.5mm 4-position (4pin) audio port that supports both audio input and output. Have you recently purchased a newer laptop or Ultrabook and now you can’t figure out where to plug in your favorite headset?