serenit4me Posted January 26, 2013 Share Posted January 26, 2013 MacBookPro5,5 Intel Core 2 Duo 2.26 GHz Currently installed memory Size: 2 GB Type: DDR3 Speed: 1333 MHz Boot ROM Version: MBP55.00AC.B03 I went through the compatibility chart and my model was not listed CMSA8GX3M2A1333C9 Is it compatible because i sent a tech.support email with that very question and all i got is a RMA approval. I get 3 beeps from system with no startup with the 2 modules installed. Are they simply defective or not compatible? Thanks Link to comment Share on other sites More sharing options...
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