Apple iMac 21.5" All-in-One Desktop Computer i3 3.07GHz 4GB Ram 500GB HDD Mac OS High Sierra MC508LL/A w/ Keyboard & Mouse
USB 3.0 for iMac mid 2011 | MacRumors Forums
Hard disk replacement for a mid-2011 iMac - Life, the Universe and Fishing
2 TB Hard Drive 3.5 7200 SATA - 21.5 inch iMac Mid 2011 - A1311 DIY Parts replacement Hard Drives
HDD SATA SSD Hard Drive Cable Replacement for iMAC 21.5" A1418 2012 2013 2014 2015 2016 2017 923-0641 923-0035 - AliExpress
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How To Upgrade/Replace Mid-2011 iMac 21.5" Hard Drive To an SSD! - YouTube