IOGEAR MicroHub GUH274 USB Hub
SIIG 4-Port USB 3.1 Gen 2 10G Hub - 2A2C
SIIG DP Cyber 1S1P PCIe Card
SIIG DP Cyber 2S1P PCIe Card
SIIG DP Cyber RS-232 1S PCIe Card - 250Kbps
SIIG DP CyberSerial 4S PCIe Board
SIIG USB 3.1 2-Port PCIe Host Adapter - Type-A/C
StarTech.com 1 Port Low Profile PCI Express Serial Card - 16550
StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows/Linux
StarTech.com 2-port 10Gbps USB C PCIe Card Adapter - USB 3.1 Gen 2 Type-C PCI Express Expansion Add-On Card - Windows, macOS, Linux
StarTech.com 3 Port USB-C Hub with Gigabit Ethernet & 60W Power Delivery Passthrough - USB-C to 3xUSB-A - 5Gbps USB 3.0 Type-C Adapter Hub
StarTech.com 4-port PCI Express LP USB Adapter Card
StarTech.com USB-C to Ethernet Adapter - Gigabit - 3 Port USB C to USB Hub and Power Adapter - Thunderbolt 3 Compatible
StarTech.com USB-C to Ethernet Adapter with 3-Port USB 3.0 Hub and Power Delivery - USB-C GbE Network Adapter + USB Hub w/ 3 USB-A Ports