USB & OTG giá cực tốt

Tim Fisher has more than 30 years' of professional công nghệ experience. He's been writing about tech for more than two decades và serves as the VP & General Manager of

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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 the types of cables and connectors used to connect these many types of external devices khổng lồ computers.

What is USB?

The Universal Serial Bus standard has been extremely successful. USB ports và cables are used to lớn connect hardware such as printers, scanners, keyboards, mice, flash drives, external hard drives, joysticks, cameras, monitors, & 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 video clip game consoles, trang chủ audio/visual equipment, & even in many automobiles.

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

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Many portable devices, lượt thích smartphones, eBook readers, và small tablets, use USB primarily for charging. USB charging has become so common that it"s now easy lớn 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 menu

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 ren 2x2: Also known as USB 3.2, compliant devices are able lớn transfer data at trăng tròn Gbps (20,480 Mbps), called Superspeed+ USB dual-lane.USB 3.2 gene 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, & the device, can all tư vấn different USB standards so long as they are physically compatible. However, all parts must support the same standard if you want it lớn achieve the maximum data rate possible.