PE3A (PCI-Express or USB 3.0 to ExpressCard Adapter) - M-FACTORS Storage
PCI Express 24- and 96-Channel Digital I/O Boards
Amazon.com: StarTech.com 2-Port PCI Express Serial Card with 16C1050 UART - RS232 Low Profile Serial Card - PCI Serial Card (PEX2S1050) : Electronics
4-Port USB 3.0 PCI-E Controller Card, EEEkit Super Fast 5Gbps PCI Express( PCI-e) Expansion Card with Build in Self-Powered Technology, Compatible with Windows Server, XP, 7, Vista, 8, 8.1 - Walmart.com
Sonnet Technologies Allegro USB 3.2 PCI Express Card
Amazon.com: MZHOU PCI-E to USB 3.0 PCI Express Card incl.1 USB C and 2 USB A Ports,Adding M.2 SATA III SSD Devices to a PC or Motherboard Using M.2 NVME to PCIe