In April 2020 I bought an iMac and in the 1st week it started with problems, I changed the boot disk, the logic card and the ram memory, it turns out that the ram memory was not the one that should take this computer, it was for a laptop not for an iMac, still with problems and 3 times I have been told that I will replace it and never does... be careful they have no warranty, they are liars and play with and purchased. SCAMMERS, it is no longer the same