How to open an only one opus windows?

Hi all, I try to configure Opus 9 to just open only one time, and after when I insert my USB key or when I try to ope a DD on my pc, the directory appear in my open opus.
It' easier to use just one interface.

thanks in advance for your help.

There's a FAQ on this:

[Always re-use a single window instead of opening new windows)