Dell · laptop motherboard

Dell Precision 7720 LA-E321P

SchematicBIOS
Board code
LA-E321P
Platform
CAP10
Made by
Compal
Revisions
Rev 1.0
Files
4
Updated

Dell Precision 7720 LA-E321P is a laptop motherboard designed by Compal and used in the Dell Precision 7720 and Dell Precision 7520.

The catalog has 1 schematic and 3 BIOS files for it, posted between 2022 and 2023 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.0; other revisions of the same board can differ in parts and layout.

The schematic is a PDF; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform CAP10.

Compatible models

Files for Dell Precision 7720 LA-E321P

Schematics 1 All schematics →

BIOS and firmware 3 All bios and firmware →

  • Dell_Precision_7520_7720_CAP10_LA_E321P_REV_1_0A00_WORKING_BIOS.rar 15 MBRev 1.0
    Download from Telegram
  • Dell_Precision_7520_7720_CAP10_LA_E321P_REV_1_0A00_i7_7820HQ_WORKING.rar 8.9 MBRev 1.0
    Download from Telegram
  • Dell Precision 7520 7720 CAP10 LA-E321P REV 1.0(A00) .rar 8.6 MBRev 1.0 (A00)
    Download from Telegram

Notes from the source posts

  • TESTED AND WORKING BIOS

Frequently asked questions

Which laptops use the LA-E321P motherboard?
File names in the catalog tie LA-E321P to the Dell Precision 7720 and Dell Precision 7520. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-E321P do I have?
Files for this board mention Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
What should I check before flashing the LA-E321P BIOS?
Read the original chip with a programmer and save two copies before writing anything. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file