DIY upgrade kit late 2013 imac | iMac late 2013 SSD with upgrade kit | 128GB SSD with tools | tools for 21.5 and 27-inch iMac | FLX300IMAC2TBK | Flexx Memory | Free UK Delivery
64GB RAM upgrade kit for 21.5-inch iMAC now offered by OWC - 9to5Mac
2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider