Amazon.com: OWC SSD Upgrade Kit for 2010 27-inch iMacs, Mercury Electra 1.0TB 6G SSD, 18" SATA III 6Gbps Data Cable, SSD Power Cable, Installation Tools and iMac Screen Adhesive Tape Set :
Replacing HDD with SSD in iMac 2010 | Yktoo
OWC SSD Upgrade Kits for 27-Inch iMac 2010
Amazon.com: OWC/Other World Computing Internal SSD DIY Kit for Apple 27" iMac 2010 Models : Electronics
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com