Although I often use a USB Connector, I have no idea how it works. It would be great if anybody can explain it to me.
Do you mean the physical connector, or the communication standard?
I mean there is plenty info on it online:
- https://en.wikipedia.org/wiki/USB - for broad overview
- https://en.wikipedia.org/wiki/USB_(Physical) - connectors, cables, power
- https://en.wikipedia.org/wiki/USB_(Communications) - signals, protocol
Actual spec: http://www.usb.org/developers/docs/
Download the zip it seems to have everything.