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USB, short for Universal Serial Bus, is a standard plug-and-play type of connection for many kinds of devices. Generally, USB refers to lớn the types of cables and connectors used khổng lồ connect these many types of external devices khổng lồ computers.

What is USB?

The Universal Serial Bus standard has been extremely successful. USB ports & cables are used to lớn connect hardware such as printers, scanners, keyboards, mice, flash drives, external hard drives, joysticks, cameras, monitors, và more lớn computers of all kinds, including desktops, tablets, laptops, netbooks, etc.

In fact, USB has become so common that you'll find the connection available on nearly any computer-like device such as đoạn clip game consoles, trang chủ audio/visual equipment, & even in many automobiles.

Before USB, many of those devices would attach to lớn a computer over serial and parallel ports, và others like PS/2.

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Many portable devices, lượt thích smartphones, eBook readers, and small tablets, use USB primarily for charging. USB charging has become so common that it"s now easy khổng lồ find replacement electrical outlets at trang chủ improvement stores with USB ports built in, negating the need for a USB power nguồn adapter.


The USB Standards danh mục

There have been several major USB standards, with USB4 2.0 the newest version available:

USB4 2.0: This version of USB 4, which supports 80 Gbps (81,920 Mbps), was released in September 2022.USB 3.2 gen 2x2: Also known as USB 3.2, compliant devices are able khổng lồ transfer data at trăng tròn Gbps (20,480 Mbps), called Superspeed+ USB dual-lane.USB 3.2 ren 2: Previously called USB 3.1, compliant devices are able to transfer data at 10 Gbps (10,240 Mbps), called Superspeed+.

The parts of a USB-connected system, including the host (like a computer), the cable, và the device, can all tư vấn different USB standards so long as they are physically compatible. However, all parts must tư vấn the same standard if you want it khổng lồ achieve the maximum data rate possible.