Riser PCIe 4x Extension Cable M2 M.2 NVMe SSD to PCIe x4 adapter cards Riser CARD support PCI-E 3.0 x4 Full Speed R24SF 10CM - Newegg.com
CP074_CONCEPT PRODUCTS_ICY DOCK manufacturer Removable enclosure, Screwless hard drive enclosure, SAS SATA Mobile Rack, DVR Surveillance Recording, Video Audio Editing, SATA portable hard drive enclosure
The Dell 4x m.2 PCIe x16 version of the HP Z Turbo Quad Pro
x4 PCI Express to M.2 PCIe SSD Adapter - Drive Adapters and Drive Converters | StarTech.com
Amazon.com: ASUS Hyper M.2 X16 PCIe 4.0 X4 Expansion Card Supports 4 NVMe M.2 (2242/2260/2280/22110) up to 256Gbps for AMD 3rd Ryzen sTRX40, AM4 Socket and Intel VROC NVMe Raid : Electronics
Sonnet M.2 4x4 PCIe Card for SSDs - Sonnet
PCI-E 4X to U.2 Expansion Card SFF-8639 NVME PCIe SSD Adapter for M.2 SFF-8643 | eBay