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通用串行总线(USB)是一种开放接口标准，自1997年底以来该接口标准就被纳入到PC主板中。1998年引入了iMac，只有两种I/O接口—USB接口和以太网接口。USB规范的第一个版本(1.0和1.1)支持最快达1~12Mb/s的传输速率。通过对包括鼠标、键盘和扬声器在内的一系列设备内置驱动程序，W
Universal Serial Bus (USB) is an open interface standard that has been incorporated into PC motherboards since the end of 1997. IMac was introduced in 1998 with only two I / O interfaces - the USB interface and the Ethernet interface. The first version of the USB specification (1.0 and 1.1) supports the fastest transfer rate of 1 ~ 12Mb / s. Through a series of devices including the mouse, keyboard and speakers built-in driver, W