For USB type-C output /notebook, smartphone) and 3.5 mm audio input (headphones, speaker) The device's USB type-C interface must support transfer of audio signals Supports audio signals USB 2.0 and USB Audio Device Class 1.0 specification Plug and Play installation Gold-plated contacts Cable diameter: approx. 2 mm Chipset: Cmedia CM119B Connectors: USB Type-C male - 3.5 mm audio female