I'm interested in several expansion boards/shields for the Mega 2560. But all of them require a serial connection. From the Arduino pages I read that the Arduino hardware has built-in support for serial communication on pins 0 and 1. The Mega 2560 should have 3 more serial connections.
Does the Mega 2560 provide 4 independent serial connections? If possible, I'd like to avoid SoftSerial.