1、Mini PCIE Expansion Card: For CH382L is a dual serial port and print port chip of MiniPCI (PCIe) bus, including two asynchronous serial ports compatible with for 16C550 or for 16C750 and an EPP/ECP enhanced bidirectional parallel port, and it can also add for CH438 chip to expand up to 24 serial ports. 2、Asynchronous Serial Ports: Two completely independent asynchronous serial ports, compatible with for 16C550, for 16C552, for 16C554 and for 16C750, and enhanced. It supports 5, 6, 7 or 8 data bits and 1 or 2 stop bits. It supports odd, even, no check, blank 0, flag 1 and other check methods. 3、Programmable Communication Baud Rate: Programmable communication baud rate, which supports 115200bps and 8Mbps communication baud rate. Support external for CH438 chip to expand another 8 to 24 asynchronous serial ports to realize PCIE 8 serial ports and PCIE 28 serial ports. 4、Supports: Support modem signal CTS, for DSR, RI, DCD, DTR, RTS, and can be converted to RS232 level. Support hardware flowing control signal CTS and RTS automatic handshake and automatic transmission rate control, compatible with for TL16C550C. Support serial port frame error detection and break circuit interval detection. Support full duplex and half duplex serial communication. 5、SIR Infrared Codec: Built in SIR infrared codec, supporting IrDA infrared communication at 2400bps to 115200bps baud rate. 1 x Mini Pcie Board1 x Rs232 Board1 x CD2 x Short Baffle1 x Connecting Line Item Type: Mini PCIE Expansion CardMaterial: PCBMain Control Chip: for CH382LInterface: MiniPCIE RS232 Interface X2Operating System: for Windows 98SE, for ME, for NT 4.0, for 2000, for XP, for Vista, for Server2003, for Win 7, for Linux