How to upgrade the RAM on the 27-Inch iMac (2020) | AppleInsider
How To Upgrade RAM in a Mac | Macworld
Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
Instalirajte memoriju na iMac računalu - Apple Podrška (HR)
How to install RAM - Memory on a Apple iMAC 27" 5K - YouTube