The Arduino Mega's PWM pins are digital ... or simply a "PWM" label next to the pin number. If your board has no printed labels, check out its pinout diagram documentation (found on the board's ...

It’s a significant update. The Arduino UNO and Arduino Mega 2560 update the Duemilanove and Mega respectively. They now use an ATMega8U2 instead of an FTDI USB to serial converter chip.