Want to use a mouse and/or keyboard with your Android device? As long as your device supports USB-on-the-Go, and you have the right adapter, it’s easy to do.
In order to do this, you’ll be using USB-on-the-Go, which is a specification allowing USB devices (such as your smartphone or tablet) to act as a host, thus allowing devices as a keyboard, mouse or flash drive to connect to them (says Wikipedia’s definition). Now, the specification is, in theory, supported by all devices running versions of Android over 3.1 (but you can always double-check).
I’ve tried different peripheral devices on my Nexus 7 and Sony Xperia T and had absolutely no problems. You’ll need an adapter or cable, which you can purchase for a couple bucks on Amazon, or, if you need a longer one, check out this 6′ cable.
Once the adapter arrived, I connected it to my Nexus 7.
I decided I should try to use it with my wireless Microsoft mouse and keyboard first. So, I inserted the dongle in the adapter and everything worked instantly. I had a cursor on screen and could use my keyboard to type. This can be incredibly useful when writing long emails and all you have around is your Android tablet. I also had absolutely no problem using the mouse, using it just like I would on a computer.
For simple tasks, this could make a computer or laptop unnecessary, especially since you don’t need to install anything. I was able to do the the same with a wired USB mouse and keyboard.