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.\n\n- 2 x DSUB 9, serial ports, male, UART 16C950\n- Chipset: OXPCIe952\n- Data transfer rate up to 230,400bps\n- Compliant with PCI Express base specification 1.1\n- Compliant with PCI Power Management 1.2\n- Supports Windows 7, Vista and XP