RAM
I have 8GB RAM now, can I upgrade it to 16GB or more?
iMac 21.5", macOS 10.15
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I have 8GB RAM now, can I upgrade it to 16GB or more?
iMac 21.5", macOS 10.15
Probably not if you have a 21.5" iMac as noted in your profile.
Check this page: Install memory in an iMac - Apple Support
Probably not if you have a 21.5" iMac as noted in your profile.
Check this page: Install memory in an iMac - Apple Support
RAM