Compact ZIP file called GC6A, 86.2 KB, without any stated device, manufacturer or document type. It belongs to a set with GC6 and GC6C, suggesting variants of one design, but which one exactly is not stated. Files of this size usually contain boardview data or a BIOS dump. After extraction, compare every identifier inside with the board in front of you; if it is a firmware image, back up the original chip with a programmer before writing and ensure the capacity matches the flash.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip