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User profile for user: TheCloudGuru 
TheCloudGuru Author
User level: Level1 9 points
Hi
I've Mac (21.5-inch, Late 2015) with 2.8 GHz Quad-Core Intel Core i5 and 8GB RAM. I would like to upgrade the RAM to 16GB. Is it possible ? if so how ?
Please let me know
Thanks.
iMac 21.5″, macOS 11.1
Posted on Jan 9, 2021 5:20 AM
Question marked as Best reply
Posted on Jan 10, 2021 6:08 PM
Configurable to 16GB means you have to buy it with 16GB when you order the machine, it does not mean it can be upgraded later. That has been the case since 2012 with the 21.5" iMacs, if you want upgradeable RAM you need a 27" iMac.
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User profile for user: rkaufmann87 
User level: Level10 140,121 points
Jan 10, 2021 6:08 PM in response to TheCloudGuru
Configurable to 16GB means you have to buy it with 16GB when you order the machine, it does not mean it can be upgraded later. That has been the case since 2012 with the 21.5" iMacs, if you want upgradeable RAM you need a 27" iMac.
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User profile for user: TheCloudGuru
TheCloudGuru Author
User level: Level1 9 points
Jan 10, 2021 5:59 PM in response to dialabrain
What does 'Configurable to 16GB' means here ? I thought I can upgrade it to 16GB :)
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User level: Level8 48,966 points
Jan 9, 2021 5:30 AM in response to TheCloudGuru
Hi,
No, you can't upgrade RAM since RAM is soldered on Logic board and there is no RAM slots.
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User profile for user: dialabrain 
User level: Level10 122,404 points
Increase RAM from 8GB to 16GB
