Single 5V power supply with embedded 5V to 3.

Single 12MHz crystal input with embedded PLL.

The connector (May be labeled HD Audio or AC97) has to be moved from the motherboard to the new sound card (assuming there is a connector on the sound card for the front panel. The front panel is a physical connection on the motherboard, its not a software function.

Embedded USB transceiver and power on reset circuit They take digital data, via USB, and convert it to audio in the speakers.

C-Media value added software (multi-channel positional 3D sound, EQ, speaker shifter, etc.).

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LED indicator pins: operation / recording mute / SCMS protection Updating C-Media audio driver automatically.

Volume up / volume down / playback mute HID button.

MCU / EEPROM / GPIO control via HID software interface.

Serial EEPROM support for customized VID/PID.

MCU support with two-wire serial interface.

Support 48 / 44.1 KHz sampling rate for both playback and recording.

Master volume control by default per-channel volume control by C-Media driver.

MIC, Line-in monitor from front channel (all channels optional) with volume control and mute function.

Recording source select from S/PDIF, MIC, Line-in and summation of MIC, Line-in and front channel.

Stereo MIC support with 33dB maximum capability.

Additional headphone output with selectable source and phone jack sense.

2 channel ADC input with 16 bit resolution 3.2 Vpp (or 4.0 Vpp programmed by vendor driver) biased at 2.25V input swing Volume control and mute function.

5.1 channel DAC output with 16 bit resolution 3.1 Vpp (1.1 Vrms) biased at 2.25V output swing Volume control and mute function Earphone buffer 2X interpolator for digital playback data to improve quality.

Dolby® digital audio streaming via S/PDIF out.

SCMS (Serial Copy Management System) compliant.compliant (consumer format S/PDIF input and output with loop-back support)

Cmedia usb audio driver v12