1、Compatibility: MiniPCIE (PCIe) bus includes four asynchronous serial ports compatible with 16C550 or 16C750 and one EPP, ECP enhanced bidirectional parallel port, and can also add CH438 chip to expand up to 24 serial ports. 2、8Mbps Communication Baud Rate: The asynchronous serial port provides an independent 256 byte FIFO buffer for sending and receiving, supports IrDA infrared codec, and supports 8Mbps communication baud rate. 3、2 Wire Serial Host Interface: Provides two wire serial host interface, which can be connected to a serial EEPROM device similar to 24C0X for storing non volatile data. 4、3.3V Power Supply Voltage: The device identification (Vendor ID, Device ID, etc.) of the PCIE board can be set in the EEPROM device. 3.3V power supply voltage, main I, O pins support 5V withstand voltage, support serial port low power sleep mode. 5、Scope of Application: Expansion card is used for MiniPCIE bus RS232 serial port expansion, PCIE high speed serial port with automatic hardware rate control, serial port networking, RS485 communication, IrDA communication, parallel port, print port expansion, etc. Item Type: 4 Port PCIE Serial Expansion Card Material: PCB Riser Card Interface Type: MiniPCIE Operating System: For Windows 98SE, for ME, for NT 4.0, for 2000, for XP, for Vista, for Server2003, for Win 7, for Linux Serial Port Specifications: 1. Completely Independent 4 Asynchronous Serial Ports, Compatible with 16C550, 16C552, 16C554 and 16C750 and Enhanced 2. Supports 5, 6, 7 or 8 Data Bits and 1 or 2 Stop Bits 3. Support Odd, Even, No Check, Blank 0, Flag 1 and Other Check Methods 4. Programmable Communication Baud Rate, Support 115200bps and Communication Baud Rate Up to 8Mbps 5. Built in 256 Byte FIFO Buffer, support 4 FIFO Tigger Levels 6. Support MODEM modem signal CTS, RI, DCD, DTR, RTS, can be converted into RS232 level 7. Support Hardware Stream Control Signal CTS and RTS Automatic Handshake and Automatic Transmission Rate Control, Compatible with TL16C550C 8. Support Serial Frame Error Detection, Support Break Line Interval Detection 9. Support Full Duplex and Half Duplex Serial Communication 10. Serial port 0 has built in SIR infrared codec, supports IrDA infrared communication with baud rate from 2400bps to 115200bps 11. Support external CH438 chip to expand other 8 to 24 asynchronous serial ports to realize PCIE eight serial ports and PCIE twenty eight serial ports 1 x Expansion Card 4 x Patch Cords 6 x Bezels 8 x Screws 1 x Drive Disk