Timetec 256GB MAC SSD NVMe PCIe Gen3x4 3D NAND TLC Read Up to 1,950MB/s Compatible with Apple MacBook Air (2013-2015, 2017), MacBook Pro (2013-2015), iMac (2013-2019), Mac Pro (2013), Mac Mini (2014) at Amazon.com
2013 MacBook Air NGFF PCIe SSD Review (256GB) - Pre-Configured MBA Doesn't Set The 'PC' Performance Bar | The SSD Review
Amazon.com: OWC 2TB Aura Pro X2 NVMe SSD Upgrade Kit Compatible with Select 27" and 21.5" iMac Models (Late 2013 - Current) : Electronics
2013 iMac teardowns reveal SSD slots, soldered-in CPU in the 21.5” model | Ars Technica
iMac 21.5 and 27-inch 2013-2019 PCIe NVME SSD|FlexxMemory|free UK delivery
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
Apple iMac 27 Inch 5K 2019 3.7 GHz 6-Core i5 1 TB SSD 32GB RAM 580X 8GB GFX | MacPro-LA
Upgrading an older iMac's PCIe SSD: Third-party solutions that save you beaucoup bucks | Macworld
Apple 27" iMac with Retina 5K Display (Mid 2020) MXWV2LL/A B&H
Amazon.com: OWC 2TB Aura Pro X2 NVMe SSD Upgrade Kit Compatible with Select 27" and 21.5" iMac Models (Late 2013 - Current) : Electronics
Apple Updates iMac with Haswell and Faster PCIe Flash Storage - MacRumors
Amazon.com: INDMEM PCIe NVMe Gen3x4 SSD 1TB 3D TLC NAND Flash Hard Drive SSD Replacement for MacBook Air 2013-2017, MacBook Pro Retina 2013-2015, iMac 2013-2017, Mac Pro 2013, Mac Mini 2014 (1TB) : Electronics
IMac's upgrade PCI-e SSD - Apple Community
Amazon.com: Sintech M.2 nVME SSD Adapter Card Upgrade Kits,Compatible for MacBook Air(2013-2017 Year) and MacBook PRO(Late 2013-2015 Year,iMac : Electronics
How to Install/Upgrade the PCIe SSD in a 21.5-inch iMac (Mid 2017) iMac18,1 iMac18,2 - YouTube
OWC SSD Upgrade Kits for 21.5-Inch iMac (2013 - 2019)
OWC SSD Upgrade Kits For 21.5-Inch iMac 2009
Mac Mini (late 2014) PCIe SSD & flex cable install for OS X Fusion Drive [Teardown & Reassembly] - YouTube