Fitting software cannot find Hi-Pro; port number changes each time device is plugged in. Cause: Windows assigns next available COM number dynamically. Solution: In Device Manager, go to Ports → Hi-Pro USB → Properties → Port Settings → Advanced → change COM port number to a low, fixed number (e.g., COM3, COM4, COM8). Restart fitting software.
Active consumption is less than 500 mA (2.5 W). hi-pro usb driver gn otometrics
Remember the golden rules:
Because modern Windows security (HVCI, Memory Integrity) often breaks legacy Hi-Pro drivers, consider running your audiology software inside Windows Sandbox or Hyper-V with driver signature enforcement disabled. This isolates the legacy driver from your main OS. Fitting software cannot find Hi-Pro; port number changes
The driver installs but remains disabled. Cause: Conflicting COM port or IRQ resources; often occurs after a Windows Feature Update. Solution: Restart fitting software
Powered directly via the PC's USB port (4.50V - 5.25V), requiring no external power supply.
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