Overview: The C-200 Mobile Headset Computer Adapter converts all headsets with a single shared audio plug (TRRS) into dual color-coded 3.5mm plugs for PC computer use. Features: ò Gold-plated connectors: reduce corrosion and oxidation improve signal quality help ensure maximum performance COMPATIBILITY: ò Compatible with all versions of iPhone, Smart Phones and most mobile phones, excluding Nokia ò Compatible with all Laptops, Notebooks, Tablets, MacBooks, and E-Readers using a single audio port