This versatile External USB Sound Card/Audio Adapter offers a high quality solution for upgrading desktop or laptop sound. Providing a robust USB audio experience the USB sound card connects to a host computer through a single USB 2.0 connection to deliver impressive external audio capability that can instantly be swapped between systems without having to open the computer case for installation. Type: External Sound Box. Sound Channels: 7.1. Interfaces/Ports: RCA Phono - Female 1 x USB - Female 2 x Toslink - Female 1 x Audio Line Out - 2 Channel. Dimensions: 0.98"H x 2.36" Width.