Features: Double Interfaces USB Auditory Adapter adds microphone input (pink) and Auditory output port (black) to your computer via the USB port, Connect your existing headphones, earphones, speakers or microphone with 3.5mm jacks to your computer, laptop via the USB port. For desktop microphone separately to provide better voice function for PC karaoke, online live streaming and gaming. The metal casing with good heat dissipation and is more wear-resistant. Gold-plated USB connection port with oxidation proof function, making Auditory transmission more stable. Specifications: Component: Metal Size:as Pictures Connection: USB+3.5mm Auditory Total Length：about 10Cm/3.94in Package Includes: 1PC USB Auditory Adapter note: Due to problem of lighting effect, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.