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OWC SSD Upgrade Kits for 27-Inch iMac 2011
How-To: Swap Your iMac, Mac mini or MacBook CD/DVD drive for a super-fast SSD - 9to5Mac
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
Cracking Open the 27" Apple iMac (2011) | TechRepublic
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