SSD Socket in HDD Model
I recently purchased a 21.5" 2015 4K Retina iMac from an old friend. It only came equipped with the standard 1 TB HDD but I'd like to replace it for a SSD. I'm wondering if I will find that there is still the Apple Socket for the OEM SSD's on the back of the logic board, so that I could add one of those (if I can find one) instead of adding a 2.5" SATA SSD?
Short question - is the SSD socket on the back of the logic board still present (just empty) on an iMac that only came with a spinning hard drive?