Should I replace an iMac's hard drive by myself? - Quora
New Internal 2nd HDD SSD Caddy for Apple iMac Core 2 Duo MB952LL/A MB952 Late 2009 A1312 27" Computer SuperDrive Optical Bay Second Hard Drive Enclosure Replacement : Electronics
OWC Data Doubler for 2009-2011 iMac, Mounting Solution for SSD or Hard Drive : Electronics
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
iMac Intel 20" and 24" (Mid 2007-Early 2009) SSD Upgrade Bundle - iFixit Store
iMac Intel 21.5" and 27" (Late 2009-Mid 2010) SSD Upgrade Bundle - iFixit Store
OWC DIY Drive Upgrade/Install Kits for Apple iMac Models
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
Late 2009 imac upgrade to 2.5 SSD with OWC | MacRumors Forums
iMac Repair & Upgrade, Same Day Services
Amazon.com: OWC 500GB 3G SSD and HDD DIY Complete Bundle Upgrade Kit for Late 2009-2010 iMacs, (OWCKITIM09HE500) : Electronics
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com