Amazon.com: GLOTRENDS Dual M.2 X4 PCIe Adapter for One M.2 PCIe SSD and One M.2 SATA SSD, Support OS Booting from M.2 PCIe SSD or M.2 SATA SSD, Including 2 x M.2
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
StarTech.com x4 PCI Express to M.2 PCIe SSD Adapter, M.2 NGFF SSD (NVMe or AHCI) Adapter Card - Walmart.com
Delock Products 64131 Delock M.2 Key M to PCIe x4 NVMe Adapter with 20 cm cable