What is USB OTG?
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 digital audio players or mobile phones, 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. For instance, 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.
In other words, USB On-The-Go 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 On-The-Go 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.
Enough of the long talk but I bet you have seen this cable so many times you never knew it had such potential. This is how an OTG looks like.
The amazing thing about this cable is that it is not expensive. It interfaces loads of peripheral or secondary devices just like your laptop and also them to communicate with your Smartphone. You don’t always need to carry your laptop wherever you go. Get an a USB OTG cable or adapter and you are good to go.
These are some of the secondary or peripheral devices your Smartphones can handle.
- Mouse (USB)
- PlayStation Game Pad
- External Hard Drive
- USB Flash Drives
- Peer to Peer Phone Charging, etc
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