Since its launch in 2000, USB 2.0 has been present in almost every imaginable devices … computers, laptops, tablets, pen drives, phones, cameras, storage devices and televisions. Although he has enjoyed great popularity for more than a decade, his successor, USB 3.0 has been gaining rapid adaptation among the newest devices.
When comparing the different USBS 2.0 and 3.0 are some quite important differences.
First, they are transfer rates: USB 2.0 offers transfer rates of 480 Mbps and instead, the USB 3.0 offers transfer speeds of 4.8 Gbps, which is 10 times faster.
In addition to winning speed, USB 3.0 allows simultaneous reading and writing between two devices. That was not possible in most computers 2.0
The increasingly aware environment consumers should know that the USB 3.0 consumes much less energy than its predecessor. And leaving aside environmental considerations, it means more battery life for all devices using USB 3.0 technology.
The second major difference is the addition of another physical bus, doubling the amount of cables and from 4 to 8. These additional cables require more space both cables and connectors, so there are new types of connectors for mini USB and micro USB. These connectors and flash memory are larger than 2.0 equivalents to accommodate additional cables and can not be used with ports 2.0
Color is the key to differentiate between USB 2.0 and USB 3.0. In almost all cases, USB 3.0 ports are blue, while the USB 2.0 ports are black or white. This happens in the connectors and cables, although it is also common to find in the cables the “SS” SuperSpeed label.
The last major difference is the power available management products 3.0.
The USB 2.0 provides up to 500 mA while USB 3.0 provides up to 900 mA, allowing energy load quickly hungry devices.
In addition 3.0 technology allows for better energy efficiency with less power to idle states or when not in use.
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