Item Type: Built-in sound card Type: Full-duplex 5.1 channel PCI-Express sound card Adopt: VT1723 Envy24D multi-channel sound chip Compliance: 1. PCI-Express x1 specification revision 1.1 2. AC'97 specification revision 2.3 Sound Sampling Rate: 24-bit, 48 KHz, support playback and recording Support: Front L/R, Surround L/R, Centre/Subwoofer, S/PDIF-Out Optional Adapter Card: Support rear surround L/R, linear input L/R, mono Mic-In, S/PDIF-In When PC Power off or on: Noise balancing cancellation function System Requirements: Operating system support for MS / Windows 7/Vista/XP/Server 2003-2008 32/64-bit / 2000 / ME / 98SE / OS X PC computer with PCI-Express slot 1、Adopt CMI8738 5.1 multi‑channel sound effect chip PCI‑e sound card adopts PCI‑Express bus slot. 2、Support 6?channel surround sound output, support for DLS sound library technology, support A3D 1.0 and DS3D and compatible with for DirectSound 3D and for EAX sound effects. 3、Provide surround sound field and clear sound quality, suitable for home theater, large?scale 3D games, enjoy music, karaoke and other entertainment. 4、Full‑duplex 5.1 channel PCI‑Express sound card adopts VT1723 Envy24D multi‑channel sound chip. 5、With sound sampling rate of 24‑bit, 48 KHz, which supports playback and recording. Support 24‑bit SPDIF OUT and SPDIF IN (optional). 1 x PCI-E 5.1 ??Sound Card 1 x Compact Disk