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
Samsung 970 EVO Plus MZ-V7S2T0B - SSD - 2 TB - PCIe 3.0 x4 (NVMe) - MZ-V7S2T0B/AM - Solid State Drives - CDWG.com
Full Speed M.2 NVMe SSD to PCIe Adapter with Heatsink
PCIe TO M.2 Adapter, Supports Raspberry Pi Compute Module 4 - PiShop.us
OWC MISADPU2PCIE2 2.5-inch U.2 SSD to PCIe Adapter at MacSales.com