Question: what are types of usb?
Answer: USB-A. A type-A connector is one you've probably used a fair amount. ... 
USB-B. Type-B connectors are almost square in shape. ... 
USB-C. One of the newer USB cables on the scene is the type-C. ... 
Mini-USB. These connectors used to be the standard for mobile devices, cameras, and MP3 players. ... 
Micro-USB. ... 
USB 3.