PCI-E 5.1 Chip CMI8738 Sound Card Support Stereo Sound Card for Windows 7 for Desktop Feature: 1. Full-duplex 5.1-channel PCI-Express sound card, working with multi-channel CMI8738 sound chip. 2. Compliant with PCI-Express x1 version 1.1 specification and 66 Channel AC'97 version 2.3 specification. 3. 24-bit audio sampling rate, 48 kHz supports playback and recording. Front L/R, surround L/R, central/subwoofer support. 4. When the computer power is off or on, it has a noise cancellation function. Support PCs running Windows 7/Vista/XP 32/64-bit and PCI-Express slot. 5. It supports PCI-Express bus socket, supports 6-channel surround sound, supports DLS sound library technology, supports A3D 1.0 and DS3D, and is compatible with DirectSound 3D and EAX sound effects. 6. Provide surround sound field and clear sound quality, suitable for home theater, large-scale 3D games, enjoy music and other entertainment. Specification: Item Type: Audio Sound Card Material: PCB Channel: 5.1 Interface: PCI-E Sampling rate: 24-bit, 48 kHz Application: Suitable for home theater, large 3D games, music and other entertainment. Package List: 1 x Sound Card 1 CD