There is an article on Support Apple about RAM upgrade: https://support.apple.com/en-us/HT205041 so probably it should be covered with warranty but on the other hand if something goes wrong and Mac was damaged by unauthorized person warranty will not over this: https://www.apple.com/legal/warranty/products/embedded-mac-warranty-us.html
The key word is "user". The point is you can have it upgraded by a Apple tech unlike if it was soldered to the motherboard you could not. I upgraded the RAM on my Mac mini but I did this with the full understanding that if I damaged it I would be SOL. While by law Apple can't void your warranty if you open the case, they can refuse to work on it if you damage something while doing so. There's a popular YouTuber that cried like a big baby because Apple wouldn't fix his iMac pro after he dropped it while taking it apart. Of course 5K wasn't anything to him it was more just drama for views. If you have a little experience working on laptop computers, have lots of patience, and the right tools you can do it yourself. The only scary thing about it is you're not careful you can damage some of the connectors that attach to the motherboard.I do find the new Mac mini a conundrum. It says on the first link posted 'Mac mini (2018) does not have user-installable RAM. You can configure the memory in your Mac mini (2018) when you purchase it.' yet when it was announced, they mentioned socketed RAM. So what's the point in it being socketed if upgrading isn't classed as user-installable?
I wouldn't take a comment by one Apple employee as policy but what he said is what I would expect the policy to be. Just remember if you damage something while replacing the RAM don't expect Apple to fix itI went to the Apple store a few weeks ago and asked staff in person if I was to upgrade the RAM myself, if it voids the warranty. According to them, it does not void the warranty, so that's what I'm going off of.
Oh I know & he said that too. Apple doesn't expect many people to be knowledgable in the process, so they just say it's not upgradable, but if you have the tools and do know how, you're fine. Again though, if you break anything, it's on you.I wouldn't take a comment by one Apple employee as policy but what he said is what I would expect the policy to be. Just remember if you damage something while replacing the RAM don't expect Apple to fix it
Most 21.5-inch iMacs have the RAM in sockets, but require major disassembly because the RAM sockets are on the back side of the logic board. You have to pull out the logic board, just to replace RAM.
I did say "most 21.5-inch", and yours is a pre-2012 iMac, before Apple went to the thin bodied iMac design. Those require major disassembly to get to the RAM slots. Your iMac is older than that, with the RAM access door on the bottom.Nah! just two little screws underneath the screen on my 21.5 inch iMac.![]()
I would go further and say the 2011 iMac was the last of the '''proper" iMac's and ones you could actually work on.I did say "most 21.5-inch", and yours is a pre-2012 iMac, before Apple went to the thin bodied iMac design. Those require major disassembly to get to the RAM slots. Your iMac is older than that, with the RAM access door on the bottom.
You're not talking about me... After more than 25 years working as a Mac tech, I have "actually worked on" almost every Mac you can imagine.
From what I saw, disassembling the 2018 Mac Mini to get to the RAM sockets is no different from when I disassembled my 2012 Mac Mini to replace its' failing hard drive. (And I'm going to be doing that again soon to swap it out with a solid state drive!) So upgrading the RAM in the 2018 Mac Mini shouldn't be too hard for me (once I eventually buy one, I'll just buy it with the stock 8 GB of RAM and then upgrade it myself to 16 or even 32 GB, to save some money.)
From what I saw, disassembling the 2018 Mac Mini to get to the RAM sockets is no different from when I disassembled my 2012 Mac Mini to replace its' failing hard drive. (And I'm going to be doing that again soon to swap it out with a solid state drive!) So upgrading the RAM in the 2018 Mac Mini shouldn't be too hard for me (once I eventually buy one, I'll just buy it with the stock 8 GB of RAM and then upgrade it myself to 16 or even 32 GB, to save some money.)