Amazon.com: KONYEAD Quad PCIe NVMe M.2 SSD Adapter Card-PCI with Aluminum Housing Express 3.0 x8 Card Support 4X M.2 NGFF PCIe NVMe SSD for Mac & PC (ASM2824 Switch)-Support Non-Bifurcation Motherboard(3003K) :
M.2 NVME TO PCIE X4 Extension Cable 4X To M2 M KEY NVME SSD PCI-E4.0 Adapter | eBay
Dell Ultra-Speed Drive Quad FH Bracket PCIe Card - holds up to 4x M.2 NVMe SSD (Kit - 5860,7875,7960,7960XL,7960R) | Dell USA
NeweggBusiness - Dual M.2 PCIe 4x Adapter for SATA or PCIe NVMe SSD with Heatsink, RIITOP M.2 SSD NVME (M Key) and SATA (B Key) 22110 2280 2260 2242 2230 to PCI-e
Rocket 1104 4x M.2 Port to PCIe 3.0 x16 NVMe HBA Controller | HighPoint-tech.com
The Dell 4x m.2 PCIe x16 version of the HP Z Turbo Quad Pro
NVME M2 PCIE 4x Adapter M.2 NVME 22110 SSD To PCI Express X4 Card Riser Adapter M Key for 2230-22110 SSD with Copper Heatsink - AliExpress
PCIe M.2 NGFF NVMe AHCI SSD to PCIE 4x 8x 16x Adapter Card for M