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USB OTG

(USB On-The-Go) An enhancement to the Universal Serial Bus (USB) that enables portable devices to be cabled directly together (no computer required). OTG devices operate in "dual-role" mode and can be identified as either a host or a peripheral. When cabled to each other, an automatic negotiation makes one the host and the other a peripheral. Fully compliant as of USB 2.0, OTG devices began to ship in 2002.




Connected Via USB OTG
Used to detect objects behind walls, this Walabot 3D scanner (bottom) acts like a peripheral device to an Android smartphone. The Walabot app operates the scanner, which gets its power from the phone. Android phones use the standard 5-pin Micro USB connection, while OTG devices with 10 pin jacks accept Micro USB 3.0 plugs (see Micro USB). For OTG devices that connect to Apple products, Lightning-to-Micro USB adapters are available.






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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Before/After Your Search Term
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USB mass storageUSB pad
USB mass storage device classUSB PC
USB memoryUSB phone
USB MicroUSB plugs
USB Micro-ABUSB port
USB MiniUSB port replicator
USB modemUSB powerline adapter
USB MSCUSB printer
USB namesUSB RAID drive
USB On-The-GoUSB stick

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