661-5713 Processor 2.66 GHz for Mac Pro Mid 2010 A1289 MC250LL/A, MC561LL/A, MC915LL/A, BTO/CTO Published November 2, 2018 at 350 × 350 in 661-5713 Processor 2.66 GHz for Mac Pro Mid 2010 A1289 MC250LL/A, MC561LL/A, MC915LL/A, BTO/CTO