A schematic diagram. Shared as “Esquema_Schematic_CCE_UTRA_THIN_T745_PCI_MB_CL341_C_HM75_I7_3517U.rar” — a .rar file, 1.95 MB.
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 @abgm_manutencao_bios. 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.
7-ZipWinRARThe Unarchiver (macOS)