Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
The types are realted to the version. you have USB 1.0 and USB 2.0, the second allows higher data rate transfer. There is no difference in the connector, so you need to get the device features to know which of them are supported.
The latest USB is the USB-OTG (On The Go)
This version is different from the others in that it has the potential of playing the role of a master. Till this, only the PC was the master communicator with all other USB devies acting as inactive slaves.