Apple A1311 iMac 21.5" Mid-2010 Intel i3 3.06GHz 4GB RAM 240GB SSD OS 10.13.6 c | eBay
iMac 21,5" HD Replacement (mid 2010 iMac) - YouTube
OWC SSD Upgrade Kit For 2010 27-inch iMacs, OWC Mercury Electra 250GB 6G SSD, 18" SATA III 6Gbps data cable, SSD Power Cable, Installation tools and iMac screen adhesive tape set :