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Apple iMac with 4K Retina display (21.5-inch, 2015) review: Apple packs more pixels into its smallest iMac - CNET
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Apple iMac 21.5" (1TB HDD, Intel Core i5 5th Gen., 2.80GHz, 8GB) All-in-One - Silver - MK442LLA-PB-3RC (Late 2015) for sale online | eBay
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