This series of iMac's has two drive connections. The first is the SATA III (6.0 GHz) that supports a standard HD. The second is acustom PCIe SSD blade drive.
As the configuration you bought was a SSD model you do have the SATA drive location free to support a second drive.
So, yes you could put in another SSD drive but you may find the limits of space will still be present if you don't get a larger SSD. Sadly, the larger SSD drives are costly! A 1, 2 or 4 TB SSHD drive maybe a better way to go. It offers a deep SSD cache, yet it's a standard spinning HD for the deeper storage.
Bear in mind the newer 'Thin Series' iMac's are a bear to open and if you don't use the correct tools and take your time you can damage the display. Follow the IFIXIT guides to the letter otherwise you could have the added expense of a new display assembly!
Dan,
I have a 2013 A1419 27" iMac (i5/3.4Ghz) which had a cracked display. I got a replacement in, but it took me a couple of days to realize I had to move the heat sensor that was on the old display. Prior to that I had been trying everything to get it working properly and the fan not spinning up!
One thing I tried was to reformat the M.2 "Blade" SSD attached to the back of the logic board, but now that I know the issue wasn't the drive or the installation of same, I need to format the drive back to "unformatted" which is what its designation was before.
I've tried Disk Utility, Drive Genius and I've looked at Terminal commands, but do not find a command or item that does what I need. I think possible "writing zeros" in Drive Genius might, but not sure, any thoughts?
Thanks,
JoeL
ATL
by joeldm