100% brand new and high qualityFeatures:In analog playback mode, supports 6 channels of analog playback software.In the digital recording mode, it receives SPDIF digital audio input and sends it back to the PC via USB.Laptop OS support for: Win98SE / ME / 2000 / XP / 7 / OS 9.1 ( version has only 2 channels to play).Add full-duplex audio playback/recording on any PC or .In digital play mode, receive audio streaming PC via USB interface and transmit audio data according to AES \ EBU, IEC60958, S/PDIF interface standards.Supports 32kbz, 44kHz. (Both of which need controller or software application support) and 48 kHz sampling frequency in digital recording, 48 kHz sampling in digital analog audio playback.Specifications:Material: metalSize: approx. 89x69x21mm/3.50x2.72x0.83inColor: blueNote: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 5.1 / 7.1 Surround Sound Card1 x USB Cable