LA-A911P – Dell Latitude E5550
The Dell Latitude E5550 and Dell Latitude 5550L are built on the LA-A911P board designed by Compal. ChambersDesignInc.com has indexed 9 files for this board — 5 BIOS files, 2 schematics and 2 boardviews.
File names mention revision 1.0. The BIOS dumps are 4 MB and 8 MB images. ODM project name: ZAM80. First posted in December 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 5
Schematics 2
Boardviews 2
From the uploader
DELL Latitude E5550 ZAM80 LA-A911P REV 1.0(A00) 2014-07-16 4MB 8MB BIOS
Board facts
| Board number | LA-A911P |
|---|---|
| Designed by | Compal |
| Platform group | LA-A |
| ODM project | ZAM80 |
| Revisions | 1.0 |
| BIOS chip size | 4 MB, 8 MB |
| First seen | 2017-12-16 |
| 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-A911P
- Dell Latitude E5550
- Dell Latitude 5550L
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.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .cad | .cad boardview | FlexBV, OpenBoardView or BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the LA-A911P board?
LA-A911P is a Compal board number used by Dell.
What BIOS chip size does LA-A911P use?
The BIOS images for LA-A911P are 4 MB and 8 MB.
Is there a boardview for LA-A911P?
Yes, 2 boardview files in .bdv and .cad format.
Which laptops use the LA-A911P board?
Files in the catalog link LA-A911P to the Dell Latitude E5550 and Dell Latitude 5550L.
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.