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 :
ST PEXM2SAT32N1: M.2 SSD card 1x PCIe (NVMe) 2x SATA M.2 at reichelt elektronik
Squid PCI Express Gen 3 Carrier Board With 6 PCIe SSD - TransIntl
M.2 NGFF to Desktop PCIe X4 X8 X16 NVMe SATA Dual SSD PCI Express Adapter Card for sale online | eBay