I think I've seen both eg the more typical 5 pin on most Cameras MP3 players etc and then the 4 pin that comes on the Pentax Optio S4 for example.

Universal Serial Bus, or USB, is a common connection used in many devices, from smartphones, laptops to everyday gadgets. It allows data transfer, device charging, and even video output. USB ports are ...

To identify the specific USB ports and connectors on your devices, you can simply look at their shape and color, or check ...