Brailliant Series Same as eReader?

Hi everyone. Subject pretty much says it. I'd like a clarification on something having to do with Humanware's Braille displays. Is their NLS eReader identical to/the same as their Brailliant series? I ask because I'm having a heck of a time connecting my eReader to USB. My brother seems to have done it when he and I were at our parents' place for Christmas. But the positioning was such that it made things a bit difficult. He came into the bedroom where I was. At the time I was sitting in a chair that was situated kitty-corner to my blow-up mattress. I briefly felt some other Braille on the device which wasn't present before, but then it disappeared. Then last night I connected one end of the charging/USB cable to the USB port on my M1 MacBook Air. That was the end which is more rounded off. The other end--the flatter end--was plugged into the front port on the left side of my eReader. I first powered up my MBA, then powered on the eReader. On My Mac I went into the VoiceOver Utility with VO-F8, and then to the Braille category. I then selected the Displays tab, while my eReader was at the USB prompt. But still no Braille displays appear in the table. Wi-Fi is turned on, and all blue-tooth is off. Everything else seems to work fine. Any further assistance greatly appreciated. Btw, the desk chair at my apartment is on wheels, so I can easily roll around in here. My apologies if some of this is off-topic, but I don't know where else to turn since tech support for these eReaders is not yet solidified.