Apple iMac 21.5" (Mid 2020) with Retina 4K Display, Intel i5, 8GB RAM, 256GB SSD, AMD Radeon Pro 560 X, Mac OS Sierra - Silver | P.C. Richard & Son
Original 512GB SSD MZ-JPU512T/0A6 For Apple iMac 21.5-inch A1418 Retina(Late 2013 – Late 2015), iMac 27-inch A1419 Retina(Late 2013 – Late 2015), Mac mini (Late 2014), Mac Pro (Late 2013), MacBook Air
iMac Intel 21.5" Retina 4K Display (2017) RAM and SATA Hard Drive Upgrade - iFixit Repair Guide
512GB 500GB SSD 6Gb/s SATA III Solid State for Apple iMac Retina 4K 21.5-inch | eBay
iMac 21.5" L15 2.8GHz i5 8GB/500GB SSD - Mac Outlet