Description: This External USB Sound card offers a high quality solution for upgrading your PC or Laptop Audio. The Device Supports 32 KHz, 44.1 KHz & 48 KHz sampling rate in digital and analog recording/playback. In Digital playback mode it receives an Audio stream from the PC via the USB interface and transmits Audio Data according to AES/EBU, IEC60958, S\PDIF Consumer interface standards. External 6 Channel (5.1) Sound Card Isochronous Transfer uses adaptive and asynchronous synchronization Compatible With Windows 98,2000,XP,7 (32 Bit Versions Only) Specification: The operating system supports Microsoft Windows98/98se/me/nt/2000/xp/vista. Make sure that the USB control in the host's BIOS is turned on, and insert the USB sound card directly into the computer's USB port. Interface description: Mic in= Microphone input: Microphone Line in= Line input: input audio such as MP3 to the sound card and synthesize it for editing on the computer Front out= Front output: 2 channels of front speakers or 4 channel or more front speakers Rear out= Rear output: open more than 4 channels in order to sound / insert rear speakers Cen/bass out= Center/bass output: 5.1 speakers dedicated interface SPDIF IN= Optical input: Optical audio input to the sound card, composing and editing in the computer SPDIF OUT= fiber output: generally output to fiber amplifier or decoder (digital signal) Package Includes: 1 x sound card 1 x USB Cable 1 x CD