PCIe to SFF-8639 Adapter Card PCIe 3.0 x8 to 2x SFF-8639 for 2.5'' U.2 NVMe SSD | eBay
M.2 NVME SSD Adapter X16 PCIe 3.0 X4 Expansion Card with Heatsink, Supports NVMe M.
US$ 8.73 - XT-XINTE M Key M.2 NVMe PCI-e SSD NGFF Type to PCIE PCI Express 3.0 4X Adapter Card with Heatsink for PC Laptop Support 2242 2260 2280 - m.xt-xinte.com
Samsung Unveils First PCIe 3.0 x4-based M.2 SSD, Delivering Speeds Of Over 2GB/s – Techgage
24 Port SATA III to PCIe 3.0 x4 NON-RAID Expansion Card - Newegg.com