Boardview for the ASUS X450LC motherboard, revision 2.2, saved in the FZ format at 155 KB. FZ is a compressed layout format common with ASUS boards, readable in OpenBoardView, FlexBV and similar tools. The file maps part placement, nets and test pads, letting you trace power rails, locate the charging circuit or pinpoint a shorted capacitor. Separate files exist for revisions 2.0 and 2.1 of the same board, so check that the rev printed on your PCB is 2.2 before following its pin assignments.
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 .fz file
Compressed and encrypted boardview used for ASUS, ASRock and Pegatron boards.