A. This product complies with the USB audio - video UVC specification and supports operating systems like Windows, Android, Linux, and MacOS. B. It supports most capture software, for example, VLC, OBS, Amcap, etc. C. It has features of high - definition capture and strong compatibility, and provides a smooth picture without stuttering or delay. D. It doesn't need an external power supply, is small in size, and is easy to carry. E. Specifications: - Input: HDMI/M input can support 4K. - Output: USB/F supports 1080P. F. Operating environment: -20 degrees Celsius to 65 degrees Celsius. G. Relative humidity: 5% - 95%. H. Material: Aluminum alloy. I. Package contents: - 1 video capture card. - 1 user manual in both Chinese and English. J. Other items are not included.