SATA Blade SSD Module - Dual SSD Drive Kit for iMac 27"
OWC 64GB DDR4 2400 MHz SO-DIMM Memory Upgrade Kit
OWC OWCDIYIM27SSD10 Solid State Drive Kit for Apple iMac 2
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