Apple A Grade Desktop Computer iMac 21.5-inch (Retina 4K) 3.4GHZ Quad Core i5 (Mid 2017) MNE02LL/A 8 GB 1 TB HDD 4096 x 2304 Display Mac OS Includes Keyboard and Mouse - Walmart.com
Further Explained: Apple's iMac 2011 Model Hard Drive 'Restrictions'
iMac Hard Drive Disk Replacement 2009 2010 2011 21 5" Apple Dollars #9 - YouTube