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Everything you need to know about USB 3.0 - Part 1

 USB 3.0 - Technology and Signal Extension

Applications for HD Video

What is USB 3.0

USB 3.0 (aka SuperSpeed or SS) is the successor to USB 2.0 and increases the data rate more than 10 fold, from 480 Mbps (USB 2.0) up to 5 Gbps (USB 3.0).  USB 3.0 is often designated by color coding the connector inserts blue, rather than the common black and white connector inserts and by the addition of the “SS” added to the normal USB icon.

USB 3.0 brings a number of improvements over USB 2.0 including: 5Gbps transfer speeds, Full Duplex (i.e. simultaneous send and receive), Sync-N-Go technology that minimizes user wait-time and power delivery up to 900mA (900 mA on PC ports only. USB charging-only adapters can exceed this and deliver higher charging currents of 1A, 1.5A, 2A 3A, etc…).  This upgrade from 500mA to 900mA explains why your smartphone never seems to charge when plugged into your PC’s old USB 2.0 ports but charges steadily albeit slowly when plugged into your PC’s 3.0 port.  Your smartphones original charging adapter may provide between 1A and 2A or on some even 3A.

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