StarTech.com 2 Port RS232 Serial Adapter Card with 16950 UART - PCIe to Serial Adapter - Supports transfer rates up to 921.4Kbps - Windows and Linux Compatible - RS2
StarTech.com 1 Port RS232 Serial Adapter Card with 16950 UART - PCIe to Serial Adapter - Supports transfer rates up to 921.4Kbps - Windows and Linux Compatible - RS2
StarTech.com 8 Port USB to DB9 RS232 Serial Adapter Hub - Industrial DIN Rail and Wall Mountable - USB - 8 x Number of Serial Ports External - 1 x Number of USB Port