USB drives are so convenient, aren’t they? But you can’t use one with your phone. Well, unless you have an USB OTG. Imagine you take something like picture or video or has some important files on your device,want to exchange them with sb who uses iphone or tablet , need a clever device looks like memory stick actually has both usb stick and micro usb (for sumsung) or Type C ( for iphone ) that connect them immediately and directly to your devices , automaticly opens your files , streaming av/sr very fast . what is USB OTG?
USB On-The-Go (OTG) is a standardized specification for USB connections that allows a device to read data from a USB connection without requiring a PC. The device is basically becoming a “USB Host”, which isn’t an ability every gadget has.
USB On-The-Go, often abbreviated to USB OTG or just OTG, is a specification first used in late 2001 that allows USB devices, such as tablets or smartphones, to act as a host, allowing other USB devices, such as USB flash drives, digital cameras, mice or keyboards, to be attached to them. Use of USB OTG allows those devices to switch back and forth between the roles of host and device. A mobile phone may read from removable media as the host device, but present itself as a USB Mass Storage Device when connected to a host computer.
USB OTG introduces the concept of a device performing both master and slave roles – whenever two USB devices are connected and one of them is a USB OTG device, they establish a communication link. The device controlling the link is called the master or host, while the other is called the slave or peripheral.
USB OTG defines two roles for devices: OTG A-device and OTG B-device, specifying which side supplies power to the link, and which initially is the host. The OTG A-device is a power supplier, and an OTG B-device is a power consumer. In the default link configuration, the A-device acts as a USB host with the B-device acting as a USB peripheral. The host and peripheral modes may be exchanged later by using Host Negotiation Protocol (HNP).
The initial role of each device is defined by which mini plug a user inserts into its receptacle.
What can you do with it? A lot of stuff! For example, if you want to connect your USB drive to your phone, or maybe use your old Xbox 360 controller with your Android tablet, USB OTG can make that happen.
The easiest and most reliable way to check if your phone or tablet supports USB OTG is to check the box it came in or the manufacturer’s website. You’ll see a logo like the one above, or you will see it listed in the specifications.
source: Viccoman
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