iMac 2013 (and later) with NVME SSD? | MacRumors Forums
ACASIS 10Gbps to Mac SSD Enclosure for Apple MacBook Air Pro, iMac from 2013 to 2017 Flash 12+16 PIN SSD Compatible with M.2 Nvme SSD with Adapter, Mac3W - Walmart.com
SSD for iMac 21.5-Inch (Late 2013 - Current) - ynzal.com
iMac 2013 Sees iFixit Teardown: SSD Slot Free For Upgrade - SlashGear
ACASIS 10Gbps to Mac SSD Enclosure for Apple MacBook Air Pro, iMac from 2013 to 2017 Flash 12+16 PIN SSD Compatible with M.2 Nvme SSD with Adapter, Mac3W - Walmart.com
256GB 512GB 2TB SSD For 2013 2015 2017 Macbook Air A1465 A1466 Macbook Pro A1502 A1398