StarTech.com 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, Windows & Linux - Connect serial RS232 (DB9) devices with this PC Serial Card. Supports 16C1050 UART - PCI Express serial card with LED activity lights - The UART PCIe supports 5/12V over pin 9 - Keep using legacy hardware with this dual serial port interface card: