Glossary
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U
USB
USB (Universal Serial Bus) is a standard for interfaces used to connect devices such as keyboards and scanners. Up to
127 devices can be connected by this interface. It can be connected and disconnected without powering off the devices.
For USB 2.0, the data transfer rate is 1.5 Mbps at Low-speed, 12 Mbps at Full-speed, and a maximum of 480 Mbps at Hi-
speed.
For USB 1.1, the data transfer rate is 1.5 Mbps at Low-speed and 12 Mbps at Full-speed.
W
White reference sheet
The white part which the scanner uses as a reference for the color white to adjust the brightness of all other areas
accordingly.