A 550 KB PDF with a Persian title meaning similar or compatible hard drives for Huawei, catalogued under schematics though it most likely serves as a compatibility list of interchangeable storage parts. No model or board number appears in the name. A list like this helps narrow down replacement or donor options quickly, yet each match should be verified against the part number, capacity and interface of the drive actually fitted in the device before ordering or installing anything.
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 @mobile_jump2. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.