2-Port Serial Interface Card, PCIe This PCI Express based serial Add-On card allows you to turn a PCI Express slot into two RS232 (DB9) serial ports. Based on a native single chip design reduces the load applied to the CPU by as much as 48% over conventional serial cards. 2 x DSUB 9, serial ports, male, UART 16C950 Chipset: OXPCIe952 Data transfer rate up to 230, 400 bps Compliant with PCI Express base specification 1.1 Compliant with PCI power management 1.2 Supports Windows 7, Vista and XP Article number: DS-30000-1