Signia 7 AX and Music Production

[tenkan]

See here for your exact problem, its common issue when you want to use win10 with very old equipment.
What does devise manager show when you plug in the Hi-pro, another thing Hi-pro likes USB 2.0 port as well.

Costco Kirkland Signature 7.0/KS7

The driver works with all HiPro, the problem is with, what Windows you are running, XP, 7 or 10. Try here It’s not for programming your HAs, it’s to help get your HiPro up and running, some of the older software has a built in test/setup file for HiPro using both serial port and USB.