1.PCI-Express Multi Function Peripheral controller with x1 Lane Interface; 2.Fully compliant with PCI Express Base Specification Revision 1.0a; 3.Support PCI-Express Power Management NOTES: Please note some sections of the manual are only applicatable for the production that have such functions. Four 16c450/550/Extended 550 compatible UARTs; Supports RS232 modes; Bi-directional speeds from 50 bps to 16Mbps/Port; Full Serial modem Control; Supports Hardware Software flow control; 5678 and 9-bit Serial format support; 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; Supports remote wakeup and power management features; Serial Port transceiver shutdown support; Support Slow IrDA on all Serial Ports.