本书规范了USB的工业标准。该规范介绍了USB的总线特点、协议内容、事务种类、总线管理、接口编程的设计，以及建立系统、制造外围设备所需的标准。

设计USB的目标就是使不同厂家所生产的设备可以在一个开放的体系下广泛的使用。该规范改进了便携商务或家用电脑的现有体系结构，进而为系统生产商和外设开发商提供了足够的空间来创造多功能的产品和开发广阔的市场，并不必使用陈旧的接口，害怕失去兼容性。

-Book industry standard USB. This specification describes the characteristics of the USB bus, agreement, transaction type, bus management, interface programming, design, and create a system, manufacturing peripherals required standard. Design USB goal is to make the equipment produced by different manufacturers can be widely used in an open system. The specification to improve the existing architecture of the portable business or home computer, and then provide enough space for system manufacturers and peripheral developers to create multifunctional products and the development of a broad market, and do not have to use the old interface, fear lose compatibility.