CablesOnline 3.5mm TRRS 4-Position Female to Dual 3-Position 3.5mm TRS Male Headset Splitter Adapter (IP-AY12C) (1) 3.5 mm Mini-Jack (4 Position-TRRS) Female (2) 3.5 mm Mini-Jack (3 Position-TRS) Male Use newer headsets (audio and mic) that are equipped with a combo 4-position/4-pin audio port, with older laptop or desktop computers Connect newer headsets to a PC or Laptop for use with VOIP applications (Skype, chat programs) Compact design for maximum portability - a great solution to have on hand in your laptop bag