iMac Intel 21.5" and 27" (Late 2009-Mid 2010) SSD Upgrade Bundle - iFixit Store
iMac 2012 internal storage upgrade
maxupgrades.com: Single SSD Drives kit for iMac 27 inch 2012 Models with SATA Blade SSD Module / Heatsink/ Power Cable and DATA Cables for [SSD + HDD] with iMac Adhesive LCD Tape
iMac 5K - 4790K, M295X - thermal compound + second SSD upgrade + Air Vents MOD | MacRumors Forums
hard drive - iMac 27" late 2012 SSD upgrade - Ask Different