This is USB To 3.5mm Mic and Headphone Jack Stereo Headset Audio Adapter USB Sound Card 7.1. USB to Headphone Microphone Stereo Audio Splitter Adapter, Cable USB Sound Adapter 7.1 Channel &USB to Dual 3.5mm Mic & Earphone Jack.USB Cable Roundtop Dual Positions 3.5mm Earphone Splitter Adapter features from one USB plug for two 3.5mm female jacks, allowing you to add a mono microphone input as well as a stereo output to your PC or laptop via a USB port.While some of the latest laptops feature an only USB port that supports both incoming and outgoing audio, this innovative Splitter Adapter headset wraps the USB port out into two distinct ports-one that can be used for a microphone connection, and the other to connect external speakers.