iMac 21.5" (Mid 2010) Hard drive replacement - YouTube
Amazon.com: Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-10600 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac (Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) RAM Upgrade : Electronics
A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit : Amazon.in: Computers & Accessories
Amazon.co.jp: OWC DIY Kit for all Apple 21.5" iMac 2011 Models for installing an internal SSD. Without tools : Computers
OWC - In-line Digital Thermal Sensor Cable for upgrading the Hard Drive in 27-inch & 21.5-inch iMac (Late 2009 - Mid 2010) models : Amazon.co.uk: Computers & Accessories
Amazon.com: OWC SSD Upgrade Kit for 2011 21.5-inch iMacs, Mercury Electra 1.0TB 6G SSD, 18" SATA III 6Gbps Data Cable, Installation Tools and iMac Screen Adhesive Tape Set : Electronics
Amazon.com: Apple iMac MNDY2LL/A 21.5 Inch, 3.0GHz Intel Core i5, 8GB RAM, 1TB HDD, Silver (Renewed), macOS High Sierra : Electronics
Amazon.com: OWC Internal SSD DIY Kit for All Apple 21.5" iMac 2011 Models : Electronics
Apple iMac 21.5インチ2010 SSD 128GB RAM12GB-
Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy for iMac 20 21.5 27 inch 2009 2010 2011 Early Late : Electronics
OWC/Other World Computing Internal SSD DIY Kit for Apple 27" iMac 2010 Models : Amazon.com.au: Computers
Amazon.com: OWC OWCDIYIM27SSD11 Solid State Drive DIY Kit for Apple iMac : Electronics
Amazon.com: Odyson - GA32N SuperDrive Optical Drive Replacement for Apple iMac 21.5" A1311, 27" A1312, A1347 : Electronics
Amazon.com: OWC Data Doubler Kit for 2009-2011 iMac, 1.0TB 3G SSD with Mounting Solution and Toolkit : Electronics