Canon CanoScan FB 620U ユーザーズマニュアル

The USB (Universal Serial Bus) interface is a new standard for connecting peripheral devices to comput-
ers. The USB interface offers these benefits:

• Accommodates a wide array of devices, including scanners, keyboards, joysticks, printers

and modems.

• Provides excellent expansibility, allowing up to 127 devices to be connected to one USB

controller.

• Supports two-way communication at speeds faster than a parallel port (12 megabits per

second versus 1) or a serial port.

• Supports ‘hot swapping,’ which is the ability to add or remove devices without turning

off the computer, an improvement over the SCSI interface that makes it easy to share
devices between computers.

• Supports true ‘plug-and-play,’ eliminating the need to set IRQ settings, set DIP switches

or reconfigure the computer’s system each time a peripheral device is added.