As reading and writing speeds of external hard drives, USB sticks and other mass storage media continues to increase, the storage capacity of these devices has also increased up to 3 terabytes. These factors are slowly but surely bringing the ten year old USB 2.0 standard to its knees. The newly developed SuperSpeed USB 3.0 technology offers even more advantages.
Overview USB 3.0
Ten times the transfer speed
Unlike the USB 2.0 standard, which has only one pair of unshielded data lines, the USB 3.0 standard has two additional cable pairs. These cables are shielded and enable both simultaneous data transfer as well as a maximum transfer speed of 5 Gbit/s (in comparison: USB 2.0 = 480 Mbit/s).
USB 2.0 Hi Speed versus USB 3.0 SuperSpeed
|USB 1.0||5,3 sec.||5,7 min.||22 min.||2,2 h.||5,9 h.||9,3 h.|
|USB 2.0||0,1 sec.||8,5 sec.||33 sec.||3,3 min.||8,9 min.||13,9 min.|
|USB 3.0||0,01 sec.||0,8 sec.||3,3 sec.||20 sec.||53,3 sec.||70 sec.|
Simultaneous data transfer
With USB 3.0, data can be exchanged simultaneously in both directions between the PC and USB medium (bidirectional). This dramatically increases efficiency in comparison with USB 2.0.
USB cable with full power
Extra power cables are a thing of the past: thanks to effective power management, the maximum current strength has been increased from 500 mA to 900 mA, allowing the external hard drives to be operated using only the USB cable..
Compatibility with USB 2.0
The new SuperSpeed standard is backwards compatible, meaning that the USB 2.0 plugs can continue to be used with USB 3.0 connections. However, due to its size, the USB 3.0 plug is compatible only with the corresponding USB 3.0 interface. The USB 3.0 A plug has remained the same size, enabling it to be connected with all USB A connections
|USB Connector Type A||USB Connector Type B||USB Connector Micro-B|