Amazon.com: M.2 NVMe PCIe Adapter,Dual M2 SATA B Key and NVMe M Key SSD to PCI-e x4 Adapter Card for 2280 2260 2242 2230 SSD, with M.2 Heatsink (M.2 NVME Mkey Card) :
Sonnet M.2 2x4 Low-profile PCIe Card – SONNETTECH
KingSpec m.2 SSD NVMe 2242 128gb 256gb 512gb | M2 PCIe 1TB ssd | Internal Solid State Drive Hard Disk for computer Laptop – Kingspec Tech
M.2 PCie Adapter for M.2 NVMe SSD - GLOTRENDS
Dell M.2 PCIe NVME Gen 4x4 Class 40 2280 Solid State Drive - 2TB | Dell USA
PCIe 4.0 Card Hosts 21 M.2 SSDs: Up To 168TB, 31 GB/s | Tom's Hardware