Memory Type: DDR2 PC2-5300, DDR2 (non-ECC)
Maximum Memory: 2GB
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 2.0GHz Intel Core Duo (20-inch)
video - installing memory