Boardview for the QT6 project, with the Uma tag indicating the version using integrated graphics rather than a discrete GPU. The .brd file is about 507 KB and opens in OpenBoardView, FlexBV and similar tools. QT6 is a Quanta project code, and UMA and discrete versions often differ in populated parts, so confirm your board is the integrated-graphics variant. Use it to locate components, highlight nets, find test points and trace every part attached to a shorted rail, alongside the matching schematic.
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 @pepeelectronica. 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.