When working with two or more Arduino-style boards with USB interface on the same computer, sometimes it can be easy to forget which board is using which USB port. With the knowledge that each Arduino has a unique serial number in its' USB interface, Tod Kurt has written a simple program to display all the manufacturer name, USB Vendor ID, Product ID (VID & PID) and serial number data for each board plugged into the PC. By noting which board has what serial number, you'll then know which board is in which port.
A great utility that can save some hair-pulling when working with multiple Arduino boards. For more information visit Tod's page. And we're on twitter and Google+, so follow us for news and product updates as well.