The BiQu BX is a printer made be BigTreeTech. They use their control board paired with a nice 7" touchscreen. The Pi is mounted right to the back of the touchscreen controller and uses OctoBTT as a control interface on the touchscreen. OctoBtt is similar to OctoDash, it is a modified Octoprint interface. To install this one has to actually download the Octoprint image first, start it up and "update" with some BTT code that provides the user interface on the touchscreen.
The Pi does run the Octoprint server, as I can connect to that, but they must use some other type of interface to actually communicate with the printer. They actually state that the serial port is disabled.
I am just not sure what good this does if I cannot connect via a web interface, which to me is the main objective of Octoprint.