Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
Micron 700GB PCIe SSD Hard drive P329h
Samsung 980 PRO MZ-V8P1T0B - solid state drive - 1 TB - PCI Express 4.0 x4 (NVMe) | Dell USA
Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
What Is a PCIe SSD, and Do You Need One in Your PC?
Newbie firm plans $2,800 add-in card that holds up to 21 PCIe 4.0 SSDs, 168TB | Ars Technica
M.2 NVME SSD to PCIe 4.0 Adapter Card, 64Gbps SSD PCIe4.0 X4 Adapter for Desktop PC , PCI-E GEN4 Full Speed - Walmart.com
StarTech.com M.2. PCI-e NVMe to U.2 (SFF-8639) Adapter - Not Compatible with SATA Drives or SAS Controllers - For M.2 PCIe NVMe SSDs - PCIe M.2 Drive to U.2 Host Adapter -