Universal Serial Bus (USB) 3.0 is the latest specification of the USB standard, introduced in August 2008 by a partnership of developers led by Intel. USB 3.0 devices are expected to hit the market in 2009 and 2010. The much speedier protocol allows for data transfer speeds up to 5.0 gigabits per second (Gbits/s), or 625 Megabytes per second (MB/s), about ten times faster than the USB 2.0 protocol.
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While there are many uses for a USB port, USB 3.0 is the next generation of technology for the connection which will allow higher interface speeds. While this technology is still not ready for the general public, it is expected to be ready by 2010. USB 3.0 is called "SuperSpeed USB" by some because of its speed improvements over both USB 2.0 and 1.1.
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Universal Serial Bus (USB) 2.0 is an external serial interface used on computers and other digital devices to transfer data using a USB cable. The designation “2.0” refers to the standard or version of the USB interface. As of fall 2006, USB 2.0 remains the current standard.
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The Universal Serial Bus has quickly become the standard used to connect peripherals to a main computer system. However, many computers may not simply have enough USB ports to connect everything the user would like to connect at once. To make up for this shortcoming, many users rely on a USB hub, which allows multiple devices to be connected through a single computer USB port.
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It seems nearly every electronic gadget manufactured today makes use of the ever-handy USB port. Early computers featuring USB normally had only one or two ports located inconveniently at the back of the case. Newer computers feature several built-in USB ports, and many cases now place two or more of these ports in front.
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