StarTech's Headphone Splitter / Adapater turns a 3.5mm audio output port into two distinct ports - one 3.5mm headphone jack and one 3.5mm microphone port.
Most new laptops and Ultrabooks come equipped with a single 3.5mm 4-position (4pin) audio port that supports both audio input and output. 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.
This 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. Alternatively, you can also connect a separate microphone and powered speakers if you prefer to use Skype or chat online without using a headset.