ST-Lab IP-110 4-Port PCI RS-422 RS-485 Serial Card with DB44 4x DB9 Cable 30450
Specification:

* Compliant with PCI 3.0 specification

* Built-in 16C950 compatible UART

* 128-bype deep transmit/receive FIFOs

* Serial communication speeds up to 1Mbps

* RS-422 and RS-485 auto detect and switching

* Low profile form factor

* ?à15KV ESD protection on all signal pins

* Plug-n-Play, I/O address and IRQ assigned by BIOS

* Support Windows XP/Vista/7/8, Linux 2.6.x/3.x

System Requirements:

* Windows® XP/Vista/7/8 (32/64 bit), Linux 2.6.x/3.x

* One available PCI slot