6CH 6 Channel 5.1 Stereo Surround PCI-E PCI Express Sound Audio Card CMI8738 Chipset Compliant with PCI Express Base Specification 1.1. Stable and reliable Cmedia Chipset CMI8738. Supports 6CH channel DAC 5.1 stereo surround output. Supports analog mixer for Line-in, Mic-in, Aux, CD inputs. Supports full-duplex 44.1k/48khz sample rate playback and record at 16bit.