LA-4892P – HP EliteBook 6540B
The LA-4892P (Compal) motherboard is found in the HP EliteBook 6540B and HP EliteBook 6440B. 3 files are indexed for this board: 2 BIOS files and 1 schematic.
First posted in February 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 2
Schematics 1
Board facts
| Board number | LA-4892P |
|---|---|
| Designed by | Compal |
| Platform group | LA-4 |
| Flash chip | 25L3205D |
| First seen | 2021-02-02 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-4892P
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the LA-4892P board?
Files in the catalog link LA-4892P to the HP EliteBook 6540B and HP EliteBook 6440B.
Who designed the LA-4892P board?
LA-4892P is a Compal board number used by HP.
Is there a boardview for LA-4892P?
No boardview has been indexed for LA-4892P yet; the schematic is available on this page.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.