I have read that the A1342 MC207LL/A macbook model from late 2009 can use up to 8gb ddr3 with 2 four gig sticks. In the description it says for 2012 model will this work on my late 2009 macbook? Thank you in advance for your help.

Questions & Answers: CMS 8GB (2X4GB) DDR3 12800 1600MHz NON ECC SODIMM Memory Ram Upgrade Compatible with Apple® Macbook Pro "Core I5" 2.5 13" Mid-2012 - A24

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CMS 8GB (2X4GB) DDR3 12800 1600MHz NON ECC SODIMM Memory Ram Upgrade Compatible with Apple® Macbook Pro "Core I5" 2.5 13" Mid-2012 - A24

Computer Memory Solutions guarantees compatibility with models provided in description.
Memory Type: SODIMM, 204-Pin
Speed: DDR3-12800, 1600 MHz
2 Piece Kit
Product appearance may vary. Picture for reference only. limited lifetime warranty when bought directly from computer memory solutions