Startechcom 35mm 4 position to 2x3 position 35mm headset splitter adapter mf white the muyhsmffadw headphonemicrophone splitter features one 4 pole 4 pin 35mm male trrs and two 3 pole 3 pin 35mm 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 35mm audio port while some of the newer laptops from apple and dell feature only a single 4 pole 35mm audio port to support both audio input and output this innov