1. CM8828 7.1-CH audio card, adopts PCI Express X1 bus control design. CM8828 audio card has rich input/output interfaces, ASIO driver and advanced intelligent software bring wonderful feelings. 2. Suitable for home theater, large-scale 3D games, audio playback and other entertainment. Independent built-in, plug and play, provide 3D stereo surround sound field, high-quality sound quality! 3. Built-in audio chip supports 24bit, 192kHz sampling rate to achieve powerful and clear sound effects, 7.1-CH audio system, compatible with 2.1/5.1 stereo surround sound system equipment 4. Total harmonic distortion (short THD) during playback (90 decibels) / recording (-85 decibels), high-quality audio data with a signal-to-noise ratio of 100dB, low-latency ASIO driver (Audio System Input Output) 5. Extended full-duplex audio mixing (such as recording and editing the file while playing the audio source; publishing on music programs or the Internet. Bus type: PCI Express Rev 1.1 Audio channel: 7.1 CH audio system, compatible with 2.1/5.1 stereo surround sound system equipment Interface interface: LINE: linear input, MIC: Mark wind input, FRONT: front output, REAR: rear surround sound output, C/SUB: center/subwoofer output, SIDE: side surround sound output Features: Rich input/output interface, ASIO driver and advanced intelligent software interface Onboard high-fidelity audio (HDA) output (F_Audio) Embedded mode: Embedded 8051-based MCU, which can transcode HD Audio commands Application areas: home theater, large-scale 3D games, audio playback and other entertainment Sampling rate: 44.1 - 192 kHz / 24 bits Signal to noise ratio: 100db Harmonic distortion: -85db playback/ -90db recording Control interface: Xear intelligent software exchange control interface Working mode: extended full duplex (simultaneous playback and recording function) Audio mode: Xear Living 1.1, Xear VoClear, Xear Sonic, Xear Surround, Xear Pro 1.0, Xear SingFX, Xear Magic Voice, Xear Audio Brilliant Operating system: Windows98SE/Server 2000/XP /Server 2003/ Vista / Win 7 / Win 8 / Win 10 Hardware requirements: at least 1 G Intel/FOR AMD CPU size:12 x 14cm Material:ABS+metal colour:black Package Contents: 1 x 7.1 Sound Card Only the above package content, other products are not included. Note: Light shooting 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.