Need advice on adding SSD drive to late 2009 iMAC! | MacRumors Forums
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
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
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com