Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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upgrade memory 2009 MacBook-pro w/2.53GHz

Have 4GB memory & would like to have 8..Do I have 1 4GB or 2X2 GB installed?...IE do I need one 4GB or 2X4GB to get to 8? mid 2009 Macbook-pro 5.5 with 2.53GHz Processor.

thanks, Jack

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Use About this Mac to find out how much you have. Divide by 2 that's most likely what is in each bay (slot). 2 - 4GB chips = 8GB RAM.

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Thanks machead3

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Jack will be eternally grateful.
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