Fully Compliant with PCI-e Base Specification, Revision 1.0a PCI-e Multi Function Peripheral Controller with x1 Lane 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 bit Serial Format Support ?Support MODEM Modem S Notes:Does not support Remap on I/O Address and IRQ