I'm allowing this message simply because there may be an add-on, probably home grown and unvetted, that will support what I have to believe is a Braille display named Braille Bar. Passing along this information on the group is just fine, as is mention of any simple technique/setting in an out-of-support version of NVDA that might "magically unlock communication" with this display.
If there are to be deep dives into Windows 7 or ancient versions of NVDA, those need to occur off list. Use the Reply to Sender link in the original message to correspond privately if needed.
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
The depths of denial one can be pushed to by outside forces of disapproval can make you not even recognize yourself to yourself.
~ Brian Vogel