Basics USB Support - 11
featured in 93% of desktop CPUs and 63% of printers by the
year 2000.
USB was designed to overcome limitations of earlier
peripheral connection technologies. USB allows end users to
connect peripheral devices to a host computer on the fly,
without having to hassle with
• Shutting down/restarting the computer
• Opening the computer case
• Installing a card
• ID conflicts
• Termination issues
• Loading device drivers (although some devices may
require a one-time driver installation).
In addition, USB provides the user with
• A “tiered star hub” network topology (see diagram later
in this section) allowing for the connection of up to 127
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