Adopt CMI8738 51 multi-channel sound effect chip PCI-e sound card adopts PCI- bus slot, supports 6-channel surround sound output, supports DLS sound library technology, supports A3D 10 and DS3D, and is compatible with DirectSound 3D and EAX sound effects.Support 24-bit SPDIF OUT and SPDIF IN (optional), provide surround sound field and clear sound quality, suitable for home theater, -scale 3D games, enjoy music, karaoke and other entertainment.1. Full-duplex 51-channel PCI- sound card2. Adopt VIA VT1723 Envy24D multi-channel sound effect chip3. Comply with PCI- x1 specification revision 114. Comply with AC'97 standard revision 235. Sound sampling rate 24-bit, 48 KHz supports playback and recording6. Support front L/R, surround L/R, Centre/Subwoofer, S/PDIF-Out7. Optional daughter card supports rear surround L/R, linear input L/R, mono Mic-In, S/PDIF-In8. When the PC is off or on, the noise balance cancellation functionProduct name: PCIe sound cardChip: CMI8738Support channel: 51 channelInput and output interface: analog, linear inputInstallation : built-inOperating System: Support MSWin10/Windows 7/Vista/XP/Server 2003-2008 32/64-bit, 2000, ME, 98SE OS PC computer with PCI- slotColour: blackMaterial: PCB+metalPackage Contents:1 x PCIe sound cardOnly 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.