USB provides a single, easytouse, standard connection type for all USB peripherals. This simplifies the design of USB peripherals and also simplifies the task of determining which plug corresponds to which slot, achieving a single universal interface for data.
USB eliminates the need to remove system resources from various devices such as mouse, modem, keyboard and printer devices, thus reducing hardware complexity and port occupation, the entire USB system has only one port and one interrupt, saving system resources.
USB supports hot plug, that is, you can safely plug in and disconnect USB devices without running the PC, and dynamically load drivers. Other common peripheral connection standards, such as SCSI devices, must be turned off before peripheral devices can be added or removed.
USB supports PNP. When a USB device is plugged in, the computer system detects the peripheral and automatically loads the associated drivers to configure the device and make it work properly.
