Manufacturer Part #: 109-C29557-00. iMac 21.5" 27" A1311 A1312 Radeon 6770M 512MB Video Card Grafikkarte. iMac 27" 2.66GHz Core i5 (A1312) - Late 2009 MB953LL/A . iMac 27" 3.06GHz Core 2 Duo (A1312) - Late 2009 MB952LL/A .
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