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Author: Steve Smakin
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Pros and cons of SuperSpeed USB 3.0
The USB concept was released by Intel in 1995 and has played a revolutionary role in the way that we store, connect and transfer data.

In the initial stages, the operating speed of USB 1.0 was 12Mbps. With the advancement of technology there came the need of operating at higher speed.

This led to the birth of USB 2.0 and later on USB 3.0, introduced just the last year. The rate of transfer is faster than ever which matches the latest applications and device.

The SuperSpeed USB 3.0 is compatible to all devices that are USB enabled.

When you use the USB 3.0 you will be able to get a transfer rate of almost 3.20Gbits/ sec or 3,200Mbits/ sec. However, theoretically it has been said to achieve a maximum rate of 4.8 Gbits/ sec.

Bi-directional data transfer is supported by the USB 3.0 and this is certainly a new addition when compared to the previous versions. There are five lanes and out of them two can be used for the transmitting of data and another two for reserving the receiving data.

With the transfer of full duplex data, the interface enables you to write and read data both at the very same time at quite high speeds.

Interrupt-driven protocol is used by the USB 3.0, allowing for the conservation of power by the new interface when in sleep, idle or suspended mode.

The transfer of data can happen when the host gets the signal. Power management is allowed at device, functional and link levels.

The thickness and look of the USB 3.0 is same as USB 2.0, with the only exception being that there are four more wires.

The plug also has a set of connectors in addition which is unlike USB 2.0. The USB is also compatible with older versions and devices at low speeds.

However, there rises the need for a new cable so that communication can be supported.

The maximum length of the cable is also reduced to three meters from five meters. But the length can be increased using hubs by up to 18 meters.

Operation with older devices limits the speed and performance of the USB 3.0 and running it at SuperSpeed needs equipment with faster hardware.

The USB 3.0 connectors and ports are attuned to the older versions of USBs mechanically and electrically. But they will not be able to take the benefit of its high speed and other features of the devices, cables, ports and host controller of USB 3.0.

The mainstream adoption of USB 3.0 will be slowed down by the decision of Intel to not support the USB 3.0 till 2011. But it may be safe to say that the speed will revolutionize the data transfer process as we know it.


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