Compatible with Intel / AMD Process based PCs capable with
the specifications listed above. Memory complies with JEDEC
Specifications, document JESD79-3B.
Write a Review5 / 52 out of 2 (100%) reviewers would recommend this product
Verified BuyerTop 100 Contributor
Reviewer: MdwycyoffLocation: IndianaAge: 55-65Experience Level: Power UserOwned Product: 1-3 months
Rating: 5/5Adding RAM to a mid-2011 21.5" iMac is a no-brainer!January 25, 2016I'm a bargain hunter, so I shop the OWC Garage Sales. I have no worries about system-pull or used Apple RAM from OWC. They stand behind their published warranty for such items. Do read the full item description with those details when purchasing. One time I did receive a DOA system-pull RAM module, and OWC quickly supplied a return shipping label for the defective one and shipped a replacement via the original delivery method at no additional cost to me.
My 2.5Ghz mid-2011 21.5" iMac is the last iMac of that screen size designed for easy user-installed RAM upgrades, by removing the bottom cover. Mine originally came with 4GB RAM (2x2GB) installed, with two empty slots. Over the two years I've owned it, I've upgraded it 3 times, first to 8GB adding 2x2GB, then to 12GB, replacing one set of 2x2GB with 2x4GB and now to 16GB RAM, replacing the other 2x2GB with 2x4GB, so it runs Yosemite 10.10.5 and El Capitan 10.11.3 beautifully, with no "Beachballs" caused by lack of available RAM.
The extra RAM also makes Windows 7 and Windows 10 run decently with 8GB RAM allocated under Parallels 10 in OS X Yosemite 10.10, while leaving enough RAM available to OS X to leave a Mac application or two running.
I would recommend this item to a friend!
Reviewer: AnonymousLocation: St. Louis, MO
Rating: 5/5OWC makes it very easy to upgrade your Mac's memoryApril 14, 2015This is the third time I've purchased and installed memory purchased from OWC in an iMac or MacBook. Each time I received a first rate product that performed flawlessly. Installation was a cinch following OWC's videos. I would recommend this item to a friend!
Factory Original Memory4.0GB1333MHz DDR3 PC10600 So-DIMMMfr P/N: APL10HYNDR3S4GBOWC SKU: APL10SOHYN4GBUsed, System Pulls, OWC Tested.90 Day OWC Fulfilled Limited Warranty Ships: Same Day