Fully Compliant with PCI-e Base Specification, Revision 1.0a PCI-e Multi Function Peripheral Controller with x1 Interface Support for D1, D2, D3hot and D3cold Utilizes 100-Mhz Differential PCI-e Common Reference Clock Supports PCI-e Power Management Serial Port: 2 16c450/550/Extended 550 Compatible UARTs Supports RS232 Modes Bi-directional Speeds from 50bps to 16Mbps/Port Full Serial Modem Control Supports Hardware, Software Flow Control 5, 6, 7, 8 and 9-bit Serial Format Support Support MODEM Modem Signals , RI, DCD, the DTR, , Convert RS232 Level Even, Odd, None, Space & Mark Parity Supported Custom BAUD Rates Supported with External Clock or by Programming Internal PLL On Chip 256 Byte Depth FIFOs in Transmit, Receive Path of Each Serial Port Support Remote and Power management Features Serial Port Transceiver Shutdown Support Support Slow IrDA on all Serial Ports Software Requirement 8 7 Vista XP ME 98SE Server 2003 Server 2000 (32bit only) Linux 2.4 & 2.6 10.4 & Above size:14x13x4cm Material:ABS colour:As shown Package Contents: 2 x Ports Serial Controller Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.