Steps to reproduce:

Connect the Zoomax 20 cell braille display, which is one of the two units distributed in the U.S. as National Library Service free e-readers. Connect it via USB.

Actual behavior:

NVDA does not detect the display, even after restart. In USB mode, the display continues displaying "USB", as if it is waiting for connection.

Expected behavior:

I would hope this unit would be supported by NVDA, as its manual (for firmware version 2.0) claims NVDA support. That implies it was tested with NVDA at some point, and worked. Obviously, third party claims of NVDA support are meaningless if NVDA does not also claim support, but it's possible this display was known to work in the past, and has since stopped working.

Additional context:

The NVDA UG, in section 16.9, claims support for the NLS E-reader. I can only assume, that since this appears in the HumanWare section, that support only applies to the HumanWare version of the NLS e-reader.

NVDA logs, crash dumps and other attachments:

Here is a log, with HWIO logging enabled.
nvda-nobraille.txt

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

2023.3

Windows version:

11, 22H2

Name and version of other software in use when reproducing the issue:

N/A

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes

Have you tried any other versions of NVDA? If so, please report their behaviors.

I have tried a few recent alphas (Oct/Nov, 2023), with the same result.

If NVDA add-ons are disabled, is your problem still occurring?

Yes

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

N/A