StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 - RS485
StarTech.com 4 Port PCI Express Serial Card w- Breakout Cable
StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows-Linux
StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe to Serial DB9 RS-232 Controller Card - 16950 UART - Windows-Linux
StarTech.com 4-Port USB PCIe Card - 10Gbps USB 3.1-3.2 Gen 2 Type-A PCI Express Expansion Card - 2 Controllers - 4xUSB - Windows-Mac-Linux
StarTech.com 8-Port PCI Express RS232 Serial Adapter Card - PCIe to Serial DB9 RS232 Controller Card - 16C1050 UART - 15kV ESD - Win-Linux
StarTech.com 8-Port PCI Express RS232 Serial Adapter Card -PCIe to Serial DB9 Controller 16C1050 UART - Low Profile - 15kV ESD - Win-Linux