
I installed some of these modules in a mid 2011 iMac (upgraded from 8GB to 16GB) which recognized the modules on startup. So far my system has run quieter - not the old "chuck-chuck-chuck" drive working harder than it should - an improvement I attribute to the new memory. Thumbs up than I expected but nothing exceptional. The modules came in protective plastic cases (plastic blisters) surrounded by bubble wrap which protected them well. I recommend.

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