The Micro USB OTG cable for Samsung Galaxy Note 2 is an adapter which easily connects external peripherals such as memory cards, hard drives, keyboards, game controllers and more.
In general, USB On-The-Go is a specification (or standard) that allows USB devices such as mobile phones and tablets to act as a host extending its functionality.
Here are just a few common devices you can use:
Memory Cards and Readers
Connector: Micro USB Male (5-pin) to USB 2.0 Female
Length: 10 cm
Compatibility Samsung Galaxy Note 2
What's in the Package?
Micro USB OTG Cable (host / adapter)