USB 3.0 - Second Major Update in USB Technology

USB 3.0 - Second Major Update in USB Technology

USB 3.0 is way too better than USB 2.0 in terms of speed. It is second significant revision of USB (Universal Serial Bus) technology which is the most common connectivity port used worldwide. USB 3.0 uses dual-bus architecture which allows simultaneously both USB 2.0 (High Speed / Low Speed / Full Speed) and USB 3.0 (Super Speed) operations. It is easy to identify USB 3.0 ports – they have blue color usually or they have the SS (Super Speed) logo on them.

But to utilize USB 3.0 connectivity benefits you must know that both the devices should be USB 3.0 ready. If any of the two devices is not USB 3.0 ready then the connection will work just like a regular USB 2.0 connection. For example if you insert a USB 3.0 pen drive into a USB 2.0 port of a laptop, then the connection will not work as USB 3.0 but USB 2.0.

USB technology was introduced in January 1996 with the introduction of USB 1.0. Modifications has been done three times since then – September 1998 as USB 1.1, April 2000 as USB 2.0 and November 2008 as USB 3.0.

USB 3.0 – Benefits

As per described features in written, USB 3.0 has a maximum data transfer speed of 5 Gb/s (Gigabits per second) i.e. 625 MB/s (Megabytes per second). USB 2.0 has this speed at maximum 480 Mb/s (Megabits per second). This means USB 3.0 is capable of providing ten times faster data transfer than USB 3.0. There are several other factors to look for, so you may not get 10 times faster speed, but on the very least you can expect to get at least 5 times faster speed.

SS (Super-Speed) USB 3.0 Device

SS (Super-Speed) USB 3.0 Device


USB 3.0 is faster and significantly reduces time for data transfer.
It has better power management options to work efficiently.
USB 3.0 devices are also compatible with USB 2.0 devices, with normal USB 2.0 connectivity.

USB 3.0 – Issues

It has been reported many times that some USB 3.0 devices are transferring data only at USB 2.0 speed even if inserted in USB 3.0 port. The usual warning message is :

This USB Mass Storage Device can transfer information faster if you connect it to a Super-Speed USB 3.0 port.


There has been several causes for this issue. Prominent causes for this issue are :

  • Driver incompatibility
  • Faulty cables labeled as USB 3.0
  • Order of starting device
  • Need for the device to be disconnected and reconnected
  • Overclocked computers