Add Storage to iMac that already has SSD
I have a late 2015 iMac 27" 5K (iMac 17,1), 4 GHz and 32 GB RAM. I ordered it with a 500 GB SSD (not a fusion drive, not an HDD). I would like to increase the storage capacity of my iMac so I can migrate my 350 GB worth of photos from my NAS onto the hard drive (and get away from having a referenced library). Physical volume specs are below.
Here's my question: I thought that upgrading my storage was fairly straightforward, in that I could swap out a 500 GB SATA SSD for a 1 TB SATA SSD. Then I learned that the factory installed SSD was connected via PCI interface --- which added about 20 steps to the fix and upped the level of complexity dramatically.
So --- are there any options for adding SSD storage to my iMac?
Thanks!