iMac (27-inch, Mid 2011) - Technical Specifications
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iMac (27-inch, Late 2012) - Technical Specifications
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
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iHouse - Apple Authorized Reseller | Rocketek USB 3.0 Aluminum 4 port hub for iMac 2012-2017
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iMac (21.5-inch, Mid 2011) - Technical Specifications
Fix Any Slow iMac 2012-2020 - Install SSD Externally - YouTube
iMac (27-inch, Late 2012) - Technical Specifications
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Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
Sabrent Premium 4-Port USB 3.0 Hub for iMac (2012 and later)
