Dual Slot M.2 NVMe PCIe 3.0 X4 Adapter Card with ASM 2812 PCIe Bifurcation Function, Work with None PCIe Splitter Function Motherboard
Quad NVMe PCIe Adapter, RIITOP 4 Port M.2 NVMe SSD to PCI-e 4.0/3.0 x16 Card with Fan for 2230/2242/2260/2280 SSD (PCI-e Bifurcation Required) - Newegg.com
Dual NVMe PCIe Adapter Card M.2 NVMe SSD to PCI-e 4.0 x8/x16 Card Support M.2 | eBay
Quad Slot M.2 NVMe PCIe 4.0 X16 Adapter Card with ASM 1184E Chip, Only Work with PCIe Splitter Function Motherboard