Duplicate-named copy of the QD-GC9-MB-D boardview in BRD format, at the same 252 KB as the original, so it is most likely identical. No brand or model is stated in the name. Open it in OpenBoardView, FlexBV or a similar viewer to see component placement, net names and test points, which helps with short tracing and locating parts referenced in a schematic. If the two copies behave differently, compare them, and match the PCB board code before relying on either.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ITHINKHS. Enginerys does not host this file.
How to open a .brd file
The most common boardview extension. Several unrelated formats share it, which is why one viewer opens a .brd and another refuses it.