StarTech.com 1-Port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller - Low Profile - PEX1S953LP - Serial Adapters - CDW.com
Amazon.com: PCI-E to USB Expansion Card Super Speed 7-Ports(5X USB 3.0 A,2X USB C) PCI Express(PCIe) Expansion Card Desktop PC Internal Hub for Windows 10/8/7 and MAC OS : Electronics
PCIe-DA16-16 Family Analog Output Card - ACCES I/O Products
PCI-Express to PCI Adapter Card PCIe to Dual Pci Slot Expansion Card USB 3.0 Add on Cards Converter TXB024 - AliExpress
2 Port PCIe x1 USB 3.0 Expansion Card SFF – VisionTek.com
PCI-E to 8 Port USB 3.0 (2xUSB-C, 6x USB-A ) Expansion Card 5Gbps,Exte – RIITOP
PCI Express CAN Adapter CPC-PCIe – Traquair Data Systems, Inc.