Wil this work with my iMac late 2009 21.5 in? I have 2 available slots with only 4GB used

8GB 1600MHz DDR3 (PC3-12800) - 2x4GB

8GB 1600MHz DDR3 (PC3-12800) - 2x4GB

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1 Answer from the Community

  • Apple Responds

    You would want to get: 1066MHz DDR3 SDRAM for a 2009 model. This link explains more: https://support.apple.com/en-us/HT201191