Linkreal 2X U.2 SFF-8639 SSD to PCIE Express 3.0 Gen 3 X8 Card U.2 NVMe SSD Adapter - Newegg.com
4 Ports SATA 3 III 3.0 6 Gbps SSD to PCI Express x1 Adapter PCIe PCI-e Controller Board Expansion Card Support x4 x6 x8 x16
PCIe Gen 4 vs Gen 3: Do you need to spend extra on SSDs?
PCIe 4.0 vs. PCIe 3.0 SSDs Benchmarked | TechSpot
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
M.2 NVMe SSD to PCI-E 3.0 X16/X8/X4 Adapter for 1U/2U Server Low Profile PC | eBay
Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
6 Ports Sata 3 Iii 3.0 6 Gbps Ssd To Pcie Adapter Pci-e Pci Express X1 Controller Board Expansion Card Support X4 X6 X8 X16 - Add On Cards & Controller Panels - AliExpress