Powering arduino

I decided to write shortly about powering arduino UNO. There are few ways to power it. I don't know if these voltage rates are the same for every board but these goes for UNO.

1. From usb cable with computer or 230v usb adapter
2. Any kind of battery with 7-12 volts, example AA batteries, 9v battery, car battery, rc-car battery etc.

More detailed info can be found on arduino.cc

Connection, either + (red wire) to VIM port, or GND (black wire) to GND of course.

I am using this for my UNO: (ordered from www.dx.com)