LA-B221P – Acer Aspire E5-551G
LA-B221P is the Compal main board used in the Acer Aspire E5-551G and Acer Aspire E5-511. 4 files are indexed for this board: 3 BIOS files and 1 schematic.
File names mention revision 1.0 or 0.3. ODM project names: Z5WAL and Z5WAK. First posted in April 2018 in BIOS Archive, Schematics & Boardviews Archive and Laptop & Desktop BIOS Files.
BIOS dumps 3
Schematics 1
Board facts
| Board number | LA-B221P |
|---|---|
| Designed by | Compal |
| Platform group | LA-B |
| ODM project | Z5WAL, Z5WAK |
| Revisions | 1.0, 0.3 |
| First seen | 2018-04-28 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Laptop & Desktop BIOS Files |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-B221P
- Acer Aspire E5-551G
- Acer Aspire E5-511
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-B221P board?
Files in the catalog link LA-B221P to the Acer Aspire E5-551G and Acer Aspire E5-511.
Is there a boardview for LA-B221P?
No boardview has been indexed for LA-B221P yet; the schematic is available on this page.
Who designed the LA-B221P board?
LA-B221P is a Compal board number used by Acer.
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.