ASUS X455LD boardview for mainboard revision 2.2, stored as a compact 153 KB FZ file. FZ is an encrypted boardview format used for ASUS layouts, opened by ASUS-compatible viewers and by tools like FlexBV or OpenBoardView with the proper key support. It shows part placement, net names and pin connectivity, letting a technician chase a missing voltage, check which component sits on a shorted line or find probing points. Check that the revision silkscreened on your board is 2.2, as layouts change between revisions.
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 .fz file
Compressed and encrypted boardview used for ASUS, ASRock and Pegatron boards.