https://community.element14.com/technologies/connector/w/documents/7019/how-does-usb-3-0-achieve-the-extra-performanceen-USTelligent Community 12https://community.element14.com/technologies/connector/w/documents/7019/how-does-usb-3-0-achieve-the-extra-performanceThu, 07 Oct 2021 04:50:34 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:1d2a3417-adcd-4ceb-80be-a2ecd18f8b33apatrohttps://community.element14.com/technologies/connector/w/documents/7019/how-does-usb-3-0-achieve-the-extra-performance#commentsCurrent Revision posted to Documents by apatro on 10/7/2021 4:50:34 AM<br /> <p style="margin:0;">There are basically two technical changes are done for the extra performance of USB 3.0 :</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">1. <span>Additional physical bus that is added in parallel&nbsp; with the existing USB 2.0 bus. This means that where USB 2.0 previously&nbsp; had 4 wires (power, ground, and a pair for differential data), USB 3.0&nbsp; adds 4 more for two pairs of differential signals (receive and transmit)&nbsp; for a combined total of 8 connections in the connectors and cabling. </span></p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">2.<span> The signaling method is&nbsp; now asynchronous instead of polling. USB 3.0 utilizes a bi-directional&nbsp; data interface rather than USB 2.0&#39;s half-duplex arrangement, where data&nbsp; can only flow in one direction at a time. </span></p><div style="clear:both;"></div>