BIOS dump for a motherboard labelled PLF PLR CSF CSR DCS MB at revision 2.1, a board code family used in Toshiba Satellite laptops; DCS indicates the discrete-graphics variant. The name does not state the laptop model, so match the silkscreen label and revision on the PCB before use. The 2.93 MB rar is meant for writing the SPI flash chip with a programmer when the machine will not POST. Read and keep the original contents first, and do not mix it up with the UMA version of the same board.
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 @biosarchive. 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 →