Uniquely Identifying FT232H Chips
The best way to solve it to program the FTDI chip using FT Prog that you can download from https://www.ftdichip.com/Support/Utilities.htm#FT_PROG

Select the device in the device tree
Select the USB String Descriptors
Uncheck Auto Generate Serial Number
Enter a Custom Serial Number
Click on the program button (which looks like a lightning bolt in silver color)

Now you can get it in unique numbers, or you can auto-assign the serial numbers based on the unique timestamp of programming.
Channel number: 0
Description: USB &lt;-&gt; Serial Converter
Serial: FT58FK0A
ID: 67330068
LocId: 13377

Channel number: 1
Description: USB &lt;-&gt; Serial Converter
Serial: FT58FK0B
ID: 67330068
LocId: 214084

Channel number: 2
Description: USB &lt;-&gt; Serial Converter
Serial: FT58FK0C
ID: 67330068
LocId: 36

Channel number: 3
Description: USB &lt;-&gt; Serial Converter
Serial: FT58FK0D
ID: 67330068
LocId: 13378

Channel number: 4
Description: USB &lt;-&gt; Serial Converter
Serial: FT58FK0E
ID: 67330068
LocId: 13378