PCI one chip solution( MCS9865IV)

It's real COM Port in your computer, high compatible with serial type device.

* Provides two DB9 RS232 ports
* 16C550 compatible UART controller on-board
* 16 byte transmit-receive FIFO (UART)
* Programmable baud rate generator

* Fast data rates up to 115200bytes/s (serial ports)

* Software programmable mode selects

* Works with various types of RS232 serial devices including modems,   PDAs, label printers, bar code scanners, digital cameras, and more

* Supports Windows® DOS/95/98/ME/NT/2000, XP, Server 2003 ,Vista and Linux