... with x1 Lane InterfaceSupport for D1, D2, D3hot and D3coldSupport PCIe Power Management Serial Port:4x 16C450/550 ... PortFull Serial Modem ControlSupports Hardware, Software flow control5, 6, 7, 8 and 9-bit Serial format SupportEven, Odd, None, Space & Mark ... , Receive path of each Serial PortSupports remote wakeup and power management featuresSerial Port transceiver shutdown supportSupport slow IrDA ...