M.2 PCIe X4 Adapter with M.2 Heatsink for M.2 PCIe 4.0/3.0 SSD
The Dell 4x m.2 PCIe x16 version of the HP Z Turbo Quad Pro
Amazon.com: GLOTRENDS Dual M.2 X4 PCIe Adapter for One M.2 PCIe SSD and One M.2 SATA SSD, Support OS Booting from M.2 PCIe SSD or M.2 SATA SSD, Including 2 x M.2
Dual Slot M.2 NVMe PCIe 3.0 X4 Adapter Card with ASM 2812 PCIe Bifurcation Function, Work with None PCIe Splitter Function Motherboard
Understanding M.2 RAID NVMe SSD Boot and 2/3x M.2 NVME SSD RAID0 Tested | The SSD Review
How To Boot From Pcie Nvme Ssd
Amazon.com: GLOTRENDS Dual M.2 X4 PCIe Adapter for One M.2 PCIe SSD and One M.2 SATA SSD, Support OS Booting from M.2 PCIe SSD or M.2 SATA SSD, Including 2 x M.2
Vantec M.2 NVMe SSD PCIe x4 Adapter - Micro Center