DS-700 using the same MiniOS7 and firmware with the PDS-700, and also provides 
virtual COM features. The DS-700 is non-programmable serial-to-Ethernet devices 
server while the PDS-700 is programmable. 

For more information, please refer to PDS-700 folder:

    CD:\napdos\PDS\PDS-700\
    http://ftp.icpdas.com/pub/cd/8000cd/napdos/pds/pds-700/