6 Channel USB 2.0 External 5.1 Optical S/PDIF Audio Sound Card Adapter for Win7 Specifications: USB 2.0: This product has USB 2.0 interface, fast and stable transmiion speed, supports USB full-speed transmiion specification up to 12Mbps, and is backward compatible with USB 1.1. 5.1 channel: This product adopts multi-channel technology, supports 5.1 channels, realizes dynamic sound, and provides dynamic rotating sound field. High-fidelity sound: This product can replace your damaged original sound card or update the existing integrated audio on your laptop to provide you with high-fidelity surround sound. Multi-function: This product can be connected to the microphone input and audio output, so you can sing with a microphone while listening to the song, which is very practical. Sample rate up to 48KHz: This product supports sampling rates of 32KHz, 44.1KHz and 48KHz in digital and analog recording and digital/analog audio playback. In digital playback mode, it receives audio streams from a PC vias a USB interface and transmits audio data according to AES/EBU, IEC 60958, S/PDIF consumer interface standards. Only R, L channel PCM audio in 5.1 channel can be transmitted in digital playback mode. In analog playback mode, it supports 6-channel codecs for analog playback. In digital recording mode, it receives S/PDIF digital audio input and sends back to PC. Three sample rate vias USB; including 32KHz, 44.1KHz internal auto lock, in analog recording mode, analog recording supports a fixed 48KHz sampling rate. Type: USB 5.1 Sound Card Material: Metal Interface: USB Input and Output Interface: Fiber SPDIF Support Channel: 5.1 Channel Installation Method: External Support System: for Windows XP/Vista/Win7/Win8/Win10 Features: Portable, Compact Size, Multifunction Size: 5.9cm x 8.9cm x 2cm/2.32" x 3.50" x 0.79" (Approx.) Cable Length: 63cm/24.80" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x USB 5.1 Sound Card 1 x Connection Cable 1 x Light Disk