Boardview in BRD format for Wistron board 08270-1, with no laptop model given in the name. BRD layout files open in OpenBoardView, Boardviewer or FlexBV and show component placement, part outlines, nets and test points on both sides of the PCB. Technicians use them to find where a part sits, follow a net from a shorted capacitor and probe signals. The dash-numbered five-digit code follows Wistron's scheme, so verify the number and revision printed on your board first.
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 @vinafix_bios. 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.