If you have another board, read the corresponding page in this getting started guide. You also need a standard USB cable (A plug to B plug): the kind you would connect to a USB printer, for example. (For the Arduino Nano, you'll need an A to Mini-B cable instead.) 2 | Download the Arduino environment Get the latest version from the download page. When the download finishes, unzip the downloaded file. 3 | Connect the board The Arduino Uno, Mega, Duemilanove and Arduino Nano automatically draw power from either the USB connection to the computer or an external power supply. Connect the Arduino board to your computer using the USB cable. 4 | Install the drivers Installing drivers for the Arduino Uno or Arduino Mega 2560 with Windows 7, Vista, or XP: Plug in your board and wait for Windows to begin it's driver installation process.