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
NVMe™ Pro-Blade SSD Mag | Western Digital
SanDisk Professional 1TB PRO-BLADE SSD Mag SDPM1NS-001T-GBAND