Amazon.com: 7-Port PCI-E to Type C (2), Type A (5) USB 3.0 Expansion Card with 2 Rear USB 3.0 Ports PCI Express Card Desktop for Windows Mac Pro : Electronics
Amazon.com: StarTech.com 1-Port USB 3.2 Gen 2x2 (20Gbps) PCIe Card - USB-C SuperSpeed PCI Express 3.0 x4 Host Controller Card - USB Type-C PCIe Add-On Adapter Card - Expansion Card - Windows