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 :
PCIe 4.0 SSDはPCIe 3.0接続でも最速級?実は下位互換で使うのもアリかも - AKIBA PC Hotline!
PCI Express 2.5in. NVMe SSD Adapter - Drive Adapters and Drive Converters | United Kingdom