StarTech.com 16 Port PCI Express Serial Card - High-Speed PCIe Serial Card - Expansion module - PCIe 1.1 low profile - RS-232 x 2 - yellow

This PCI Express serial card adds 16 high-speed RS232 ports to your standard or low-profile desktop or server PC. This lets you maximize the number of available DB9 RS232 ports that are available for connecting your serial-based devices and equipment, while using only a single PCI Express (PCIe) slot. It's the perfect solution for adding the serial ports you need, even if your desktop PC or server only has a limited number of PCIe expansion slots.