What is USB 2.0?
Universal Serial Bus (USB) 2.0 is an external interface used on computers and other digital devices to transfer data by cable. The designation "2.0" refers to a standard or interface version and was released in 2000. While USB 3.0 was standard in 2008, it is backward compatible with older versions. The primary difference between each version was a major increase in the transfer rate, with the USB 2.0 improved the original edition and 3.0 is even faster.
Main function
USB is a plug-and-play interface, which means that the computer may not be turned off to connect or disconnect the component. For example, a media player can be connected to a computer via USB, while the machine is still used, so these devices are "hot swappable". The computer registers the device as a different storage area and displays all the files it contains. Other types of ports often require someone to turn off the computer before making such a connection lead to most of the popularity of the format.
Maximum approvedThe length for the USB 2.0 cable is about 16 feet (5 meters). This restriction is based on how quickly the signal passes through the cable. If it takes too long, the connected devices indicate that it has been lost and anything over 16 feet (5 meters) will exceed this time.
upgrade from 1.0
When USB standards change from an existing version to a newer version, as well as from 1.1 to USB 2.0, the main improvement is often the speed at which data transmits between connected devices. In 1.0 and 1.1, two speeds were available: "low speed" with a speed of 1.5 megabits per second (Mbit/s) and "full speed" at 12 Mbit/s. USB 2.0 improved with the transmission rate of "hi-speed" 480 Mbit/s. Since this standard is usually compatible, version 2.0 includes older speeds "full speed" and "low speed" function with devices with 1.0 devices.
i in USB 2.0 was "low speed" often used forENOSY data between computer and mouse or keyboard, except for top gaming devices. Memory sticks and external hard drives have become much stronger with 2.0 standards because they often encountered "narrow places" with older transfer speeds. Anxiety is a point in which the data is slowed down by reducing transfer speed, such as slower speeds of 1.0 ports, although the devices themselves can send and receive data much faster.
Common devices
In addition to media players, many other external devices use these data ports, including digital cameras, mobile phones and newer cable boxes. Native components also use this interface such as mice, keyboards and external hard drives, as well as printers and network hardware. One of the most popular and comfortable USB 2.0 gadgets is a memory wand that can store data for easy transfer between machines.
Introduction 3.0
In 2008, USB 3.0 was officially accepted as new withTandard for this format. It introduced a new connection that contained multiple pins, allowing the "superspeed" data transfer speed up to 5 gigabites per second (Gbit/s). Standard 3.0 maintained backward compatibility, including the speed of "hi-speed" and "full speed" that work with older USB 2.0 devices.