PCIe 3.0 to NVMe M.2 Adapter for M.2 SSD, X4, (1) M.2 (M Key) and (1) M.2 (B Key) Compatible with PCIe 3.0 Motherboards and Backward Compatible with PCIe 2.0 and PCIe 1.0 - Walmart.com
Amazon.com: IO Crest M.2 SSD + SATA to Pci-E X2 Hardware RAID Card (B or B+M Key) (SI-PEX50102) : Electronics
1set Mm.2 Nvme Ngff Ssd To Pcie 4.0 X4 Express Adapter Card M Key & B Key Compliant Pci Express M.2 Specification 1.0 For Window - Add On Cards & Controller Panels - AliExpress
M.2 SSD Card 1x PCIe (NVMe) 2x SATA M.2 - SATA Controller Cards | StarTech.com
PCI Express - Wikipedia
Addlink S90 1.0TB SSD NVMe PCIe GEN4X4 M.2 2280 3D TLC NAND Solid State Drive | eBay