目前，能够传输高品质视频信号的两种总线接口（ＵＳＢ和ＩＥＥＥ １３９４接口）都支持即插即用，且具有易扩展、使用方便等特点。但是ＩＥＥＥ

１３９４接口的价格相对较高，因此，当前采用更多的是ＵＳＢ接口。-At present, be able to transmit high quality video signals of the two bus interfaces (USB and IEEE 1394 interface) support the Plug and Play, and easy expansion, easy to use and so on. IEEE 1394 interface but the price is relatively high, therefore, the current use of more USB interface.