Chosen Solution

I was asked the possibility to add a SSD drive to a blade only model (18.3 3.5 ghz Retina). Do I need the right and left mounting bracket to install the adaptive 3.5 to 2.5 socket ? Since it’s a blade only model, did Apple put them anyway inside ?

It’s a really good question. I have a fusion, so I don’t know for sure. You should get some on AMZ, in case, then once you’ have the iMac open you’ll be able to decide to use them or return them: https://www.amazon.com/Apple-A1311-Brack… Also, I would recommend an adapter: https://www.amazon.com/gp/product/B01ELR… Here is my SSD now: