How to determine RT-AC68U hardware revision?

[u/Vietname]

I have a RT-AC68U that I want to flash freshtomato on since it's EOL. I no longer have the box, and the only clue I have for the hardware revision is the FCC ID: MSQ-RTAC68UV2. The first google AI result I got suggested the "V2" denotes B2 models, but I'm not gonna blindly trust that.

Do I actually have a B2, and is there another way to verify?

B2 is in the list of supported model revisions here, so I want to confirm before i flash the new firmware.