... video and audio file direct by USB 2.0 interface without sound card. However, the installation is ... need other power Capture Video & Audio though USB 2.0 interface Support Brightness, Contrast, Hue, and Saturation ... that is easy to carry Could capture audio without the sound card High plug & play Support ... conference/net meeting System Requirements:USB: Compliant USB 2.0 free port OS: Windows 2000, XP, ...