Only one VM167 at a time

I’m trying to work with two VM167 under W10. Separately (only one at a time) they work fine. Of course with different addresses. If connected together they are not recognized by the system. The system finds the 0 card only. If I disconnect the 0 card the system finds the card 1. But never together. Could help me?
Many thanks, Dario

Please see this thread for a solution: VM167problem on Windows 10 1803 and USB 3.0
There is a link for downloading an updated DLL.
Please copy the new DLL to Windows\SysWOW64 folder.