Welcome to our store! Full-duplex 5.1-channel PCI-Express sound card utilizing the CMI8738 multi-audio chip. Complies with PCI-Express x1 Specification Revision 1.1 and 66 Channel AC'97 Specification Revision 2.3. Features 24-bit audio sampling rate, supporting 48KHz for playback and recording. Supports front L/R, surround L/R, and Center/Subwoofer. Includes a noise balance reduction function for when the computer power is off or on. Supports Windows 7/Vista/XP 32/64-bit PC computers with a PCI-Express slot. Utilizes a PCI-Express bus slot, supports 6-channel surround sound, DLS audio library technology, A3D 1.0, DS3D, and is compatible with DirectSound 3D and EAX sound effects. Delivers surround sound fields and clear audio quality, ideal for home theaters, large-scale 3D games, and enjoying music. Item Type: Sound Audio Card Material: PCB Channel: 5.1 Interface: PCI-E Sampling Rate: 24-bit, 48 KHz Application: Suitable for home theaters, large 3D games, music, and other entertainment. Includes: 1 x Sound Card, 1 x CD