1、Comply with PCI-Express 1.0a standard. 2、PCI-Express rate 2.5Gb/s full duplex channel. 3、Support plug and play, standard parallel mode, with automatic identification. 4、Compatible with 16C550 UART standard and 256-byte transmit and receive FIFO high-speed data transmission rate up to 250K / sec. 5、Support RS232 hardware flow control data bit length: 5, 6, 7, 8. PCI-E to 2 serial port +1 parallel port card. Use WCH382L main control chip. Efficient compatibility, stable performance, high-speed transmission. Parallel port transfer rate up to 1.5 Mbyte / sec. Support remote wake-up and power management features. Suitable for long-term operation. The physical serial port has an interrupt address and is stable. Output 2 independent 9-pin standard serial ports, exclusive interrupt port number instead of virtual device, better solve complex transmission control system, stable and effective to ensure data flow is not lost. Can be connected to a variety of serial device data transmission rate: 110-230400Bps. Features: 1. Comply with PCI-Express 1.0a standard. 2. PCI-Express rate 2.5Gb/s full duplex channel. 3. Support plug and play, standard parallel mode, with automatic identification. 4. Compatible with 16C550 UART standard and 256-byte transmit and receive FIFO high-speed data transmission rate up to 250K / sec. 5. Support RS232 hardware flow control data bit length: 5, 6, 7, 8. 6. Support Moden regulator signal CTS, DSR, RI, DCD, DTR, RTS, RS232 level conversion. 7. Support remote call and power management functions. 8. Built-in SPP, PS2.EPP, ECP compatible with IEEE 1284 printing protocol. 9. Parallel port transfer rate up to 1.5 Mbyte / sec. 10. Built-in 16-byte FIFO. 11. Compatible with communication, industrial computer, PoS terminal, industrial PC, monitoring equipment, ticket vending machine, programmer, printer, access control system, tax control needle printer, etc. 12. Support System for Windows 98/SE/ME/2000/XP/Vista/Win 7/in 8 /in 10 32 and 64bit for Linux, for Mac. Specifications: Bus type: PCI-Express XI Interface: 2 * Serial RS232 and 1 * DB25 parallel port Transmission rate: parallel port, up to 1.5Mbyte/s; serial port maximum rate up to 921.6Kbps Package List: 1 * PCI-E to parallel port card 1 * With 2 serial port 3 * Short iron piece 1 * Drive CD