Firmware image for the Realtek RTS5452H Type-C power delivery controller, tagged z8t, which appears to be a board or project identifier, with a CRC32 checksum of 0x21FBFA55 in the name. No laptop brand or full board number is stated, so confirm the source on your own before use. These small dumps are written to the SPI flash attached to the PD chip when USB-C charging fails or ports are dead. Extract the RAR, compare the checksum, read and keep the existing chip contents, then program with a suitable flasher.
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 @biosdumpcomputer. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →