It's not possible to plug in a USB A or B connector the wrong way.As of 2022, many computers, phones and peripherals use it. Micro-B, at peripheral end, for most smartphones.Type B, at peripheral end, rare except for printers.Type A, commonly used at computer end of cable.The engineers learned from other connectors before they designed USB connectors. Faster and slower USB devices and controllers can be connected together, but they will run at the slower speed. In order to use the hi speed transfer rate, the USB controller and the connected device both need to support it. The actual data rate is usually lower due to protocol overhead. These speeds are raw bit rates (in Million bits per second). Hi speed is only available in USB 2.0 and later, and Super speed is only available in USB 3.0. USB offers five different transfer speeds: 1.5 MBit per second (called low speed), 12 MBit per second ( Full Speed), 480 MBit/second ( Hi Speed), 5Gbit per second (called super speed), and 10 Gbit/s (“super speed+“). It optionally uses a different connector called USB Type-C, which is reversible (meaning you can plug it in both ways). USB 3.1 was released in 2016 and doubled the speed of 3.0. It is over 8 times faster than USB 3.0.ĭifferent standards Ĭurrently, five different USB standards are used: USB 1.0, USB 1.1, USB 2.0, USB 3.0 and USB 3.1. It is a reversible connector, which means that you can plug it in both ways. Today it represents the most widely used USB device.
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