What is the USB port for?

What is the USB port for?

Bat-Caddy: USB (Universal Serial Bus) is a worldwide industry standard for connection, communication and power supply of electronic devices. Most electronic gadgets are equipped with it nowadays, and on your caddy you can use it to plug in/charge a cell phone, GPS or any other electronic device. For more information about USB, please reference the Wikipedia page at http://en.wikipedia.org/wiki/USB.