Advantech PC-LabCard series PCL-744

Technical details
Name: PCL-744
Company: Advantech Co. Ltd
Chipset: 4x Motorola MC2681P
Bus: ISA 16 bit
Connectors: 8x serial DB25 with breakout cable
Manufactured: 1994

This is an intelligent 8-port serial card. Advantech does not list this product any more and also drivers could not be found.