Quad Slot M.2 NVMe PCIe 4.0 X16 Adapter Card with ASM 1184E Chip, Only Work with PCIe Splitter Function Motherboard
AMPCOM M.2 NVME SSD to PCIe 4.0 Adapter Card, 64Gbps SSD PCIe 4.0 X4 Expansion Card for Desktop PC , PCI-E GEN4 Full Speed - AliExpress
Amazon.com: INLAND Performance SSD 1TB PCIe 4.0 M.2 Internal Solid-State Drive NVMe Gen4 x 4 with DRAM Up to 5,000 MB/s, 1,800 TBW 3D TLC NAND : Electronics
KC3000 PCIe 4.0 NVMe M.2 SSD High-performance for desktop and laptop PCs - Kingston Technology