USB Blaster Fix Hardware Port Number

Hi all,

I'm having issue when connecting Multiple USB Blaster to a single PC. I'm writing to script to automatically program my FPGA using theses USB Blasters.

The issue is when I disconnect any of them then the hardware port name will change incrementally.

Example:

Initial Stage

Blaster 1 -- USB Blaster [USB-2]

Blaster 2 -- USB Blaster [USB-3]

Blaster 3 -- USB Blaster [USB-4]

When I disconnect and reconnect example Blaster 3. It seems that the blaster driver is being reinstall then it became like below.

Blaster 1 -- USB Blaster [USB-2]

Blaster 2 -- USB Blaster [USB-3]

Blaster 3 -- USB Blaster [USB-5]

This causes an issue when I'm trying to program using Blaster 3 which the port number was off.

Does anyone know how to fix the value of the port number?