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USB devices are divided into device classes such as hub, human interface, printer, imaging, or mass
storage
device. The hub device class indicates a specially designated USB device that provides additional USB
attachment points (refer to Chapter 11). USB devices are required to carry information for selfidentification
and generic configuration. They are also required at all times to display behavior consistent with defined
USB
device states.
Si usted no tiene un puerto USB en su computadora y quiere incorporarlo, solo tiene que hacer dos
cosas:
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Chequear que su computadora reconozca los protocolos USB en www.usb.org/shopping-bag.html haciendo click
en USB evaluation utility
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Comprar una tarjeta PCI a USB.
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Entonces usted obtiene los siguientes resultados:
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Agrega dos puertos USB a su computadora.
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Disfrutar de las ventajas del verdadero plug and play.
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Compatibilidad con Win 98 y Mac OS 8.1 o superior.
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Una tasa de transferencia de datos de 12 Mbps.
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Un slot PCI disponible Win 98 o Mac OS 8.1 o superior.
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