StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA/SP4 Power - Quad Port PCI USB 3 Controller Card (PCIUSB3S4) - USB adapter - PCI-X - USB 3.0 x 4
RIITOP NVMe PCIe Adapter NVMe to PCIe 3.0/4.0 x4 Converter Card Support 2230, 2242, 2260 2280 mm M.2 NVMe SSD - Newegg.com
PCI Express-to-PMC-X Adapter - 4X for Delivery Systems (9940) | Technobox