Main controller: CM8828 + CM9882ABus type: PCI Express Rev 1.1Audio channel: 7.1 audio system, compatible with 2.1 / 5.1 stereo surround sound system equipmentInterface interfaceLINE: linear input, MIC: microphone input, FRONT: pre-output,REAR: Rear surround output, C/SUB: Center/Subwoofer output, SIDE: Side surround outputFunctional characteristicsRich input/output interfaceASIO driver and advanced intelligent software interface onboard high fidelity audio (HDA) output (F_Audio)Embedded mode: Embedded 8051-based MCU that transcodes HD Audio commandsApplication areas: home theater, large 3D games, audio playback, etc.Sample sampling rate: 44.1 ~ 192 kHz / 24 bitsSignal to noise ratio: 100dbHarmonic distortion: -85db playback / -90db recordingControl interface: Xear intelligent software exchange control interfaceWorking mode: extended full duplex (simultaneous playback and recording function)Audio modeXearTMLiving 1.1, XearTMVoClear, XearTM Sonic, XearTM Surround,XearTM Pro 1.0, XearTM SingFX, XearTM Magic Voice, XearTM Audio Brilliantcolour:blackMaterial:Metal + plasticPackage Contents:1 x CM8828 PCIe7.1- sound card (standard long iron plate)1 x CD-driver1 x User's ManualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.