SIMADYN D DUST1 Protocol access via USB to Serial interface

[Sie-auto]

Dear Expert

May you introduce me how can install DUST1 protocal to communicate with T400. My computer have no COM so I used USB2COM (not siemens adapter), I can used this one to communicate with Simovert Master Drive but when I try to connect with T400, I loose because I can not install "SIMADYN D DUST1 Protocol access via serial interface".

could you please help me to fix this trouble.
thanks in advance
(Sorry, I do not know how to upload picture)

Best regards
sie-auto