![]() It supports data rates of 40 Gbit/s, is compatible with Thunderbolt 3 and backward compatible with USB 3.2 and USB 2.0. ![]() Released on August 29, 2019, by USB Implementers, USB4 is based on the Thunderbolt 3 protocol. This variant includes the SuperSpeed and SuperSpeed+ data modes but reaches data rates of 10 and 20 Gbit (1.25 and 2.5 GB/s) via USB-C. USB 3.2 (Gen 2×2) was released in September 2017. SuperSpeed+ increases the maximum data rate to 10 Gbit / s. It offers a new SuperSpeed+ transfer mode labeled USB3.1 Gen 2.It includes the SuperSpeed mode of USB3.0 and is labeled as USB 3.1 Gen 1.USB3.1 was released in July 2013 and it has two variants. Those with a USB2.0 keyboard or mouse will not experience compatibility issues as they will recognize the system in the next generation, but they will not be able to take advantage of the improved data transfer speed of this bus port.ģ.0 also includes the UASP protocol, which provides higher speeds than the BOT (Bulk-Only-Transfer) protocol. Version 3.0 of this universal connector is 10 times faster than the previous one. In late 2009, manufacturers such as Asus or Gigabyte introduced motherboards with this new bus revision. ![]() Thus, traffic is bidirectional (Full duplex). In this way, two lines are used to send, the other is used to receive, and the fifth is responsible for feeding the current. On the other hand, it increases the speed of data transmission, because instead of working with three lines, it does with five lines. The main characteristic is the transfer rate from 480 Mbps to 4.8 Gbps (600 MB/s) multiplied by 10.Īnother feature of this port is that the devices that are plugged in and after a while that are no longer used will immediately switch to low consumption status.Īt the same time, the current density increases to 500 to 900 milliamps, which serve to supply a mobile phone or portable audio-visual player in less time. Changes in this release were made through ECN (Engineering Change Notices). USB2.0, launched in April 2000, has high data transfers of 480 Mbit/s. USB1.1 was released in August 1998 and was the oldest revision that led to what Microsoft called the Old PC. It did not allow extension cords or pass-through monitors due to timing and power limitations. USB1.0, released in 1996, has data rates of 1.5 Mbit/s and 12 Mbit/s. It is ten times faster than the previous 2.0 and, according to estimates, was published by Intel in mid-2009 or perhaps by another Hardware company, based on information collected from the Internet. It has a transfer speed of up to 4.8 Gbps (600 MB/s). The USB2.0 cable has four lines, a data pair, a power, and a ground. It is found in almost 99% of today’s computers. It provides transfer speeds up to 480 Mbps (60 MB/s) but generally up to 125Mbps (16MB/s). These devices divide the bandwidth between them based on a LIFO impedance algorithm. This was the fastest version before the USB2.0 specification. This standard provides a transfer rate of up to 12 Mbps (1.5 MB/s), but measurements are said to be required for independent sources. It provides transfer rates of up to 1.5 Mbps (192 KB/s) and is mostly used by human interface devices, keyboards, mice, and webcams. USB devices are classified into four types according to their data transfer speed: ![]() The USB port can transmit at speeds between 1.5 Mbps and 12 Mbps The parallel port between 600 Kb/s and 1.5 Mb/s and the serial port can be up to 112 Kb/s. Thus, USB was created at a speed of 12Mb/s, and as a result of improvements, high-speed USB 2.0 was created with speeds up to 480Mb/s, that is, 40 times faster than connections with USB 1.1 cables. Initially, there was a serial and parallel interface, but it was necessary to combine all the connectors that make a simpler and higher performance connection. USB was created by seven companies in 1996: IBM, Intel, NorthernTelecom, Compaq, Microsoft, Digital Equipment Corporation, and NEC. An important feature is that it allows devices to operate at higher speeds, such as, on average, about 12 Mbps, which is 3 or 5 times faster than a parallel port device and 20 to 40 times faster than the serial port. ![]()
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