2.2 USB Audio
HCS-3900M/20 has a built-in USB Audio (2 Mono channels, 16bit, 32 kHz) which can be connected to the computer
through USB cable (software requirement: WindownsXP or higher) for digital audio input/output. In the follow we take
Win7 system as an example to introduce the function and operation of the USB Audio.
2.2.1 Installation of USB Audio
Once the HCS-3900M/20 main unit connects to the computer, the HCS-3900M USB Audio will be detected automatically.
If it is connected for the first time, the USB device driver will be recognized and installed automatically, as shown in the
following figure:
Figure2.8: Installing USB Audio
After successful installation, the user can check the information of HCS-3900M USB Audio from “Device Manager-
Sound, video and game controllers”, as shown in the following figure:
Figurer2.9: Information of USB Audio
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