Know More Details USB 3.0 Technology

Technology Universal Serial Bus (USB) has become the standard devices that are connected to a computer, ranging from the hard disk, Mouse, Printers, Cameras, and more. USB 1.0 actually already started to be introduced since 1996, but began to be popular when USB 2.0 came in the early 2001's (with speeds up to 40x USB 1.0 - 480 Mbits / s or about 57 Mbytes / s). Then in 2010 it introduced a USB 3.0 started, how their performance?


USB 2.0 is known as High-Speed USB, USB 3.0, while the term with the SuperSpeed, because it can be said Super speed. Here are more detailed explanations.

USB 3.0 Specification

Some changes have been implemented on a USB 3.0 along with the increased use of external devices and higher speed requirements. Here's a brief explanation of the technology.

Transfer Rate
USB 3.0 data transfer speeds of about 3200 Mbits / s (3.2 GBits / s or 400 Mbytes / s), and in theory can achieve 4.8 Gbit / s. This speed is 6 to 10x faster than USB 2.0 maximum speed.

Data Transfer
USB 3.0 data transfer technology introduces two-way (full duplex), so it can read and write data simultaneously (simultaneously). USB 2.0 and earlier do not support this bi-directional technology.

Power
Electric voltage is derived from 4.4 V to 4V, then the flow also improved (to 150mA), so in addition to more energy efficient, a USB 3.0 port can be used 4-6 and increase the recharging device.

Power Management
Power management is better than USB 2.0, thus supporting the idle, sleep and suspend (Wikipedia)

Physical Forms
Edge USB 3.0 will be the same as USB 2.0 (standard), but the cable therein will be more, there are an additional four USB 2.0 channels compared to cable (a total of nine cable channels).
What about USB 2.0 User?

Currently the majority of electronic devices still use the USB 2.0 technology, then what if later on have started to change with USB 3.0?. This is not a concern, USB 3.0 is also concerned about previous technology.

Compatibility
USB 3.0 compatible with USB 2.0, so USB 2.0 devices will still be used in USB 3.0 port and will work with USB 2.0 standard speed. But not vice versa, a USB 3.0 device can not be installed on a USB 2.0 port.

Operating System Support
Windows Vista, Windows 7 and Linux already supports USB 3.0, and Mac will soon follow. But for Windows XP until now there is no certainty whether there will be an update to this new interface.
Shortage

Besides having various advantages above, the USB 3.0 interface also has some shortcomings, including the following:

* The length of cable. Maximum length of a USB 3.0 cable will be reduced to 3 feet (USB 2.0 up to 5 meters). While this can be overcome by adding a USB Hub.
* Speed Limit, not every device can use a USB 3.0 full speed, such as magnetic hard disk is limited to pieces of disc rotation speed.