Finding Your Mac's Model Identifier Helps You Find Right Upgrades
Where can I locate the Model Number or Family Number on my Mac? Are they unique? What are the limitations identifying a specific Mac using this identifier?: EveryMac.com
MachineProfile: Detailliertes System-Datenblatt für MacBook, iMac & Co. › ifun.de
Which Precise Mac Model Do You Have? Here's How to Find Out — GeekHampton
iMac Intel 21,5" Late 2011 (EDU) EMC 2496 - gebrauchte Originalersatzteile für Macs