Mic and headset combo splitter: Turn a 3.5 mm Audio output port into two distinct ports, one 3.5 mm headphone jack and one 3.5 mm microphone port with this microphone and headphone splitter cable Keep in touch while traveling: This mic and headset adapter features a compact and sturdy design that makes it an ideal solution for mobile applications Keep your legacy equipment: This audio splitter allows the use of older audio accessories with newer computers like the Ultrabook Multiuse functionality: This 4 pin splitter cable can be used for connecting a headset and microphone combo to the audio port, as well as an external microphone and powered speakers to your computer Lifetime warranty: Backed by a StarTech.com lifetime warranty, this microphone and headphone splitter has free lifetime technical support, making it a truly cost-effective choice