Code image for the Realtek RTS5452H USB Type-C power delivery controller on Compal board LA-L978P, with CRC32 checksum 0x60586576 to confirm file integrity, in a 55.2 KB RAR. LA-xxxxP is Compal's board numbering scheme. When a laptop will not charge or power through USB-C, corrupted PD firmware is a common cause, cured by rewriting the small flash chip beside the controller. Check the checksum, save the original contents first and verify the board number.
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 @sm_bios. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @sm_bios | 18 Sept 2025 | Open file on RM Schematics |
| @smbiossupport | 18 Sept 2025 | Open file on RM Schematics |
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 →