There are basically two types of USB connections-master (Type A) &slave (Type B).
Type A ,rectangular ends fit into a computer or laptop which acts as the master and Type B,square ends fit into printers,scanners etc .The type B could not fit into all devices say a digital camera or a smartphone,hence the need arose for smaller mini B and even smaller micro B plugs for modern day devices.
Hence the need arose for so many categories of USB connections in the computing industry.
The main categories of USB are USB Type A,USB Type B,Micro USB A,Micro USB B,Micro USB AB,USB Mini B,USB 3.0 A Type,USB 3.0 B Type,USB 3.0 Micro B.
Oct 27th, 2014
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