Technical Details Brand Name: JANRI, brand new Fit Machine MB990/A 2.26 GHz Core 2 Duo 13.3" MB991/A 2.53 GHz Core 2 Duo 13.3" (2009) MC374/A 2.4 GHz Core 2 Duo 13.3" MC375/A 2.66 GHz Core 2 Duo 13.3" MC700/A 2.3 GHz Core i5 13.3" (Early 2011)MC724/A 2.7 GHz Core i7 13.3" (Early 2011) MD313/A 2.4 GHz Core i5 13.3" (Late 2011) MD314/A 2.8 GHz Core i7 13.3";(Late 2011) MD101/A 2.5 GHz Core i5 13.3" (Mid 2012 MD102/A 2.9 GHz Core i7 13.3"; (Mid 2012) Compatible Part No.; 922-9063 922-9525 922-9773 Notice: Please check the picture and compability before your biding.