USB driver must be installed on the computer used for readings if the communication is to take place via USB.
Read terms of license
IP > COM program must be installed and running on the computer used for readings if the communication is to take place via the internal web server. In the program, the communication is to be set to 9600 8N1 or 38400 8N1.
The program in the Kamstrup M-Bus Master MultiPort 250D and 250 L can easily be upgraded to newest version. Just download the files and follow the instructions in the upgrade description.
Installation Guide