2 Port PCI RS232 Serial Adapter Card w/ 16950 UART - Dual Voltage...This 2-port PCI Serial Card offers high performance 16950 UART channels/ports for connecting any new or legacy serial peripheral with data transfer rates of up to 460kbps. A cost-effective solution for connecting serial modems POS devices printers ISDN terminal adapters and more the PCI serial card offers dual voltage support allowing you to use a PCI (5V) or PCI-X (3.3V) slot for installation. A versatile solution the PCI Serial card supports Windows Vista XP ME 2000 98 95 and NT4 and offers IRQ sharing and a PCI plug and play interface to guarantee convenient hassle-free serial device connections.