The Arduino Uno and Mega 2560 use normal drivers (USB CDC) supplied by the working system to communicate with the ATmega8U2 on the board. Serial Port menu in the Arduino software with the Arduino board connected to your computer. If it doesn't, there is probably not a bootloader on http://angelofzrld.blogerus.com/6276399/herbal-and-dietary-supplements-a-collection-of-research-and-resources