Micro USB Connectors are a miniaturized version of the normal/standard USB connector (Universal standard bus). These connectors are becoming more and more popular as they are designed for smaller devices like phones and mp3 players etc. Although these connectors are miniaturized in size they still allow high-speed data transfer.
The Micro USB has now been adopted by most manufacturers worldwide ( with the exception of apple ) The micro USB is now scheduled to replace mini USB connectors in many different types of portable devices such as Mobile phones, Digital Cameras and headphones.
Type A This type is flat, with a rectangular interface that is found on most USB cables. This interface holds the connection in place by friction which makes it very easy for users to connect and disconnect.
Type B - This type is almost square, found on powered devices that connect to a computer i.e. scanner or printer.