How to: Install an Intel iMac Dual Hard Drive Kit 21.5" (Mid 2011) - YouTube
add extra SSD to 27-inch 2011 iMac|Flexx Memory|Free UK Delivery
How to Install a 2.5-inch SSD in the SSD Drive Bay of a 27-inch iMac Mid 2011 (Updated) - YouTube
Install SSD iMac 2011 - How-To DIY Guide Tutorial
2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan