May 05, 2011 OWC's step-by-step video of how to install memory in the Apple 21.5-inch or 27-Inch iMac (mid 2011) with Model ID: iMac12,1 or iMac12,2 Compatible memory ava.
How do I find the number 1 slot for an additional RAM module in a mid 2010 21.5' iMac.
The basic machine has two 2GB modules installed in the upper slots. I would like to take advantage of the slight increase in performance one gets when a single 4GB card is correctly installed in the number 1 slot however I am unable to determine which is the number 1 slot.
Currently the memory slots shown in 'About this Mac' are, top to bottom: empty, 2 GB, 2GB, 4 GB. I believe they should be 4 GB, 2GB, 2GB, empty?
Imac 21.5 Mid 2011 Ram Slots
Is this a good question?