Memory Type: DDR3 PC3-10600, DDR3 (non-ECC)
Maximum Memory: 16GB
The SSD is fully functional in the system. The CTSSDCONVT ( 3.5" bracket ) is need to mount the SSD.
Memory or DRAM is the "working" memory of the computer. It's used to store data for programs (sequences of instructions) on a temporary basis.
Install Guide for your:
iMac 2.8GHz Intel-Quad Core i5 (27-inch - DDR3) Mid 2010
video - installing memory