Summary: I bought a Dell 3115Cn in September of last year originally running Mac OS 10.5. While the 2155cdn is a different printer, this is a general comment about DELL functionality with Apple. Product worked fine (printing, faxing, and copying). I'd give those functions 5 stars. I have never used the scanner and on the web (before buying the product I read a lot of negative reviews about the scanning function especially over the network).