I upgraded from Xerox M940, what a change. No error messages, it actually works without a glitch. Double sided copying is wonderful, fast scanning and printing, document feeder is a big plus for multiple scans/copies.Two trays for different kinds of paper ( I loaded one with legal and one with letter size)The only conn is that if you turn it off, the computer will not wake it, so you have to manually turn it back on, but who cares... Got it at Office Max for $... Great deal. Big five stars.