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This year’s Consumer Electronics Show in Las Vegas marks the official arrival of USB 3.0, said to be a vast improvement over USB 2.0 originally created in 1996. But what are the main differences that make this upgrade so necessary.

The first and most important difference is speed. USB 3.0 boasts a max transfer rate of 4.8 Gbps compared to the 480Mbps of its predecessor. This upgrade is most practical when transferring large files. An HD movie, 25 GB in size, takes only 4 minutes to transfer using USB 3.0. That's three times faster than the 14 minutes it takes to transfer the same movie over a USB 2.0 connection. USB 3.0 is able to do this because it added an extra physical bus, and upgraded the data interface allowing communication in both directions simultaneously.

Another big improvement made in USB 3.0 is the power system. USB 3.0 provides 900mA compared with 500mA with USB 2.0. This allows for some devices to be completely bus power, and allow some devices to charge faster. USB 3.0 also allows for more power management by allow either device connected to conserve power when in idle mode.

Overall USB 3.0 will provide faster transfer rates, but in doing so it allows for the creation of some new devices. These devices include: HD webcams, monitors connected via USB, external Blu-Ray Drives, and Multi-Channel audio devices.

USB 3.0 is a much needed upgrade that is highly anticipated by consumers.

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