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Micro USB

The very small USB port found on cellphones and other portable devices is a Micro-B socket. Considerably smaller than the USB Type B sockets on printers and scanners, the Micro-B socket is half the thickness of the Mini-B socket found on digital cameras. Micro-A plugs and Micro-AB sockets are the standard connectors for USB On-The-Go (see USB OTG). See USB 3.0 and USB.




The Smallest USB Socket
The cable that plugs into the USB 2.0 Micro-B socket on this smartphone has a Type A plug at the other end for the computer or AC charger. USB 3.0 Micro sockets accept a 2.0 Micro plug, but not vice versa.










Two-in-One Micro USB/USB
The common USB Type A and Micro-B can be combined in the same plug by using a moving outer shell.






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