OWC DIY Kit for 2009 - 2011 27" iMac optical bay:... at MacSales.com
OWC Data Doubler Optical Bay Hard Drive/SSD Mounting
Install SSD iMac 2011 - How-To DIY Guide Tutorial
Amazon.com: Internal 8X DL DVD Burner SuperDrive Replacement for Apple MacBook Pro Unibody Late 2011 13 Inch 13" Laptop A1278 MD313LL/A MD314LL/A, Super Multi DVD+-R CD-RW Writer Optical Drive : Electronics
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
OWC Data Doubler Optical Bay Hard Drive/SSD OWCDIDIMCL0GB B&H
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
Optical Bay Hard Drive or SSD Mounting Solution for iMac
OWC Data Doubler Optical Bay Hard Drive/SSD Mounting Solution with tools (for iMac 2009-2011) | Megamac