Features: 1. 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. 2. 5.1/7.1 channel: This product adopts multi-channel technology, supports 5.1/7.1 channel, realizes dynamic sound, and provides dynamic rotating sound field. 3. 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. 4. Multiple protection: This product has built-in overvoltage, overcurrent, leakage and short circuit protection devices, which are safer and more reliable to use. 5. Sample rate up to 48KHz: This product supports sampling rates of 32 KHz, 44.1 KHz and 48 KHz in digital and analog recording and digital/analog audio playback. In digital playback mode, it receives audio streams from a PC via 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 via USB; including 32KHZ, 44.1KHZ internal auto lock, in analog recording mode, analog recording supports a fixed 48khz sampling rate. Descriptions: 1. This external sound card provides a high quality solution for upgrading your PC or laptop audio, supporting profeional 5.1 channel output and fiber SPDIF output, PC + sound card + amplifier and 5.1 speaker. You can set up your digital home theater to enjoy true AC-3 or DTS surround sound, or connect directly to 5.1 powered speakers. 2. This product is very suitable for HTPC home theater and friends with high sound quality requirements (such as watching movies/games/K songs), plugging in ordinary headset voice chat and online karaoke. Specifications: Color: Blue Interface: USB Input and output interface: linear input, fiber optic SPDIF Support channel: 6 channel Chip: CM8206 Sound Support Direct Sound: 3D Installation method: external Sampling rate: 32KHz/44KHz/48KHz Support system: for Win98/ME/2000/XP/VISTA/WIN7/WIN8, for MAC OS9.1 Package Included: 1 x USB Optical S/PDIF Audio Sound Card 1 x drive disc 1 x data line Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.