923-0270 Apple iMac 21.5" 2.9GHz Core i5 Fan This is a replacement fan for the Late 2012 iMac 21.5". Compatible with, iMac Intel Core i5 21.5" 2.7Ghz, 2.9Ghz, or Intel Core i7 3.1Ghz. A genuine Apple product. 100% customer satisfaction.