BRD boardview tagged Lenovo for a board coded GC2A-MB, with an F suffix that may indicate a revision, though the name does not state the device model. The 238 KB file maps component placement and nets so a technician can find parts by designator, trace rails and locate test points. It opens in OpenBoardView and similar viewers. A related GC2 layout exists, so verify the GC2A marking and suffix on your PCB match before relying on this file for repair work.
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 @boardviews. 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.