Keep USB SDFU port number all are same for each device.

[Justin_Yeh]

Hi Sir 

We'd want to make lot of nrf52840 devices, and all devices included open bootloader program, 

however, the each device USB SDFU port number are different (COM30, 31, 32 ...) when I plug-in usb cable to PC.

it's not good for production, please teach me how to keep port number are same for each device (all device will plug-in same PC's usb port).

Thanks.

[AndreasF]

Hi.

This is unfortunately a Windows issue, as this is the way Windows handles COM ports, there is not much we can do about it.

- Andreas

[Justin_Yeh]

Maybe maintain a constant serial number, then Windows does not change the COM port ?

[AndreasF]

Hi.

It's not up to Nordic to maintain the same COM Port number, this is something Windows does, and we cannot control it.

- Andreas