Archive for the Dahua DH-HCVR4108HS-S2 HDCVI DVR, a 13.2 MB ZIP. The bracketed tokens d1420 and 58_022 look like the main board code and a firmware or board revision identifier, though the name does not explain them. Such packages normally carry a flash dump or firmware used to revive a recorder that fails to boot. Compare the board markings with the codes in the name, read and keep the existing flash with a programmer, and confirm the chip size before writing anything back.
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 @laptopchiplevelrepair. Enginerys does not host this file.
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Compressed archive that every operating system opens without extra software.