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<a accesskey="1" href="page.php?w=USB&amp;p=20">1.Previous</a><br />
<a accesskey="3" href="page.php?w=USB&amp;p=22">3.Next</a>
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<p>communicate over their USB ports directly. Some extension to this limitation is possible through <a href="page.php?w=USB_On-The-Go">USB On-The-Go</a>, Dual-Role-Devices and <a href="page.php?w=protocol_bridge">protocol bridge</a>.<br/>
* A host cannot broadcast signals to all peripherals at once; each must be addressed individually.<br/>
* While converters exist between certain <a href="page.php?w=Legacy_system">legacy interfaces</a> and USB, they might not provide a full implementation of the legacy hardware. For example, a USB-to-parallel-port</p><p>
<a accesskey="1" href="page.php?w=USB&amp;p=20">1.Previous</a><br />
<a accesskey="3" href="page.php?w=USB&amp;p=22">3.Next</a>
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