==== Driver Installation (Windows) ==== When you plug in the Arduino, you may hear a sound from the computer and a little popup bubble in the bottom right corner of the screen that says **Found New Hardware FT232R USB UART ** {{ http://www.ladyada.net/images/arduino/foundft232ruart.jpg?nolink&256x129 |}} After a few seconds, the new hardware wizard will start. Select **"No not this time"** and click **Next> ** {{ http://www.ladyada.net/images/arduino/foundnewhardware.jpg?nolink&503x392 |}} At the next screen, select **Install from a list or specific location ** {{ http://www.ladyada.net/images/arduino/specificloc.jpg?nolink&503x392 |}} At the next screen make sure **Include this location** is selected and browse to the folder that contains the driver you downloaded. Select the folder and click **OK** {{ http://www.ladyada.net/images/arduino/browsedriver.jpg?nolink&505x395 |}} It should copy some files and then come up with this window. Click **Finish** {{ http://www.ladyada.net/images/arduino/foundserialconv.jpg?nolink&503x392 |}} Almost immediately, another window will pop up, this time it will say **USB Serial Port**. As before, click **Install from a list or specific location ** {{ http://www.ladyada.net/images/arduino/foundserialport.jpg?nolink&503x392 |}} Browse to the same folder again... {{ http://www.ladyada.net/images/arduino/browsedriver.jpg?nolink&505x395 |}} And it should complete successfully! {{ http://www.ladyada.net/images/arduino/usbserialportfinished.jpg?nolink&503x392 |}} You may need to reboot the computer. {{ http://www.ladyada.net/images/arduino/rebootdriver.jpg?nolink&311x85 |}} {{ http://www.ladyada.net/images/arduino/rebootcomputer.jpg?nolink&789x146 |}} When the computer is done rebooting, make sure the Arduino is plugged in (and the green light is lit). Go to the **Device Manager** (From the **Start Menu**, select Settings->Control Panel. Double click on **System** and select the **Hardware** tab. Then click on the **Device Manager** button) {{ http://www.ladyada.net/images/arduino/devicemanager.jpg?nolink&470x520 |}} Look for an entry under **Ports (COM & LPT) ** that says **USB Serial Port (COM)** the COM number may vary but it should be something like **COM3** or **COM4**. The COM stands for "communication", and each one has a unique number, known as the **COM Port number**. In this case the COM Port number is **COM3**. If you don't see the COM port verify the Arduino is plugged in, and check that you installed the VCP FTDI driver.