The era of PCI Express 5.0 SSDs will begin in Q3 2022 - HWCooling.net
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 :
What is the difference between PCIe Gen 3 and PCIe Gen 4? - Kingston Technology