Apple computers model name identification and getting detailed specs?
The Apple Specs database isn't always complete -- I think this is the relevant entry, but it doesn't list the model number so it's hard to be sure. I tend to use third-party sources for this sort of thing: I've found EveryMac.com to be reliable, and if you already have a Mac, Mactracker is excellent.

BTW, if you have the computer running with an internet connection, you can get it to look itself up: Pull down the Apple menu, select "About This Mac", then in the info box that opens click "More Info", then in the expanded info window click Support near the top right, then the Specifications link below.