PCI one chip solution( MCS9865IV)

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

* Provides one 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