EXPRESS/34  RS422 /RS485 2 SERIAL PORT CARD

Oxford 16C950 chip set

(SUPPORT Vista,Win7) W/ Cable

 PCI-e one chip solution  not USB base solution ,

It's real COM Port in your computer, not USB to COM port
  high compatible with serial type device.

* Fully compliant with ExpressCard Specification 1.0

* ExpressCard/34 Form Factor Module * Provides two DB9 RS422/RS485 ports

* High speed 16C950 compatible UART controller on-board

* On-chip hardware auto flow control to guarantee no data loss

* Built-in 128 byte DMA software FIFO

* 4-WIRE RS422/485 and 2-wire RS485 application
* RS422/485 speed up to 115.2Kbps   
* Supports Windows® 2000, XP, Server 2003  and Vista