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 128K 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

Not DIP Switch Software Switch

between RS422 , RS485-4W & RS485-2W