Apple iMac (A1312) 27 Inch High Sierra Intel 2.7Ghz i5 1TB HDD 16GB RAM Mid 2011 | eBay
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Apple Thunderbolt Display 27-inch (Mid 2011)
Apple iMac 27-inch Mid 2011 Technician Guide Service Manual | eBay
Amazon.com: 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade Repair
Apple 27" iMac with SSD (Mid-2011) : Speed Tests & Benchmarks - YouTube