About The Usb Interface - Canon CanoScan FB630U Product Manual

About the USB Interface

The USB (Universal Serial Bus) interface is a new standard for connecting peripheral devices to
computers. This interface can accommodate a wide array of devices, including scanners, keyboards,
joysticks, printers and modems. Up to 127 devices can be connected to one USB controller, providing
excellent expansibility. The interface is an improvement over previous popular interfaces for several
reasons. A USB port supports two-way communication at speeds faster than a parallel port (12 megabits
per second versus 1) or a serial port. It also 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. Moreover, it 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. Driver support is built into the latest versions of the System.
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