BIOS firmware for the Huawei MateBook D 15 built on the Quanta board DAH98NMB8B0, revision B, in an 11.0 MB RAR archive; the HF token is not explained in the name. The DA...MB...0 numbering is Quanta's ODM pattern, so the board code on the PCB must match exactly. Technicians use such a dump to restore a board after firmware corruption by writing the flash chip with a programmer. Inspect the archive to see whether it holds one or several images, back up the original chip, and check image size against capacity.
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 @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →