OWC DIY SSD Upgrade Kit for iMac 27" model 2010 - 4mac
Amazon.com: OWC SSD Upgrade Kit for 2010 27-inch iMacs, OWC Mercury Electra 2.0TB 6G SSD, 18" SATA III 6Gbps Data Cable, SSD Power Cable, Installation Tools and iMac Screen Adhesive Tape Set :
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
maxupgrades.com: Dual SSD Drives kit for iMac 27 inch 2012 Models with Blade SSD Module with Heatsink and Power and DATA Cables
OWC SSD Upgrade Kits For 21.5-Inch iMac 2010
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
My 12 y/o son is so excited. Found him a pristine Mid-2010 27" iMac for $100. Going to give it the SSD upgrade but he's stoked to start recording music with it :
iMac Mid-2010 27 inch (A1312) SSD and RAM disassembly and upgrade - Much FASTER! - YouTube