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- XPS 14Z la-7451p 0728 bomSchematic · LA-7451P · 1.56 MB · 10 May 2025Schematic pdf1.56 MB
- Inspiron 1470 (14z)1570 (15z) UMA QUANTA UM2 UMAArchive · 579 KB · 22 Jan 2025Archive rar—579 KB
- Inspiron 1470 (14z)1570 (15z) UMA QUANTA UM2 UMASchematic · 602 KB · 31 Jul 2019Schematic pdf—602 KB
- Inspiron 14Z-5423 DMB40 11289-1 (UEFI & BIOS)BIOS · 11289-1 · 3.58 MB · 10 Jul 2019BIOS zip3.58 MB
- dell 14z
A BIOS image for a Dell Inspiron 14z, with no exact model number, version or board number in the name.
BIOS · 8.00 MB · 9 Oct 2025BIOS—8.00 MB - DELL STUDIO 14Z
RAR archive of 644 KB for the Dell Studio 14z, with no ODM, board number or revision given in the name.
Archive · 644 KB · 1 Oct 2019Archive rar—644 KB - Dell inspiron 14z 5423 DMB40
Firmware package for the Dell Inspiron 14z 5423, with the label DMB40 taken from the name, which is the board designation Dell uses for this ultrabook family.
BIOS · 3.73 MB · 15 Jun 2022BIOS zip—3.73 MB - DELL XPS 14Z TESTED BY FST FIX
BIOS dump for the Dell XPS 14z laptop, marked as tested, packed as a small RAR. No board number or revision is stated, so compare the motherboard label before use.
BIOS · 1.97 MB · 23 Dec 2024BIOS rar—1.97 MB - DMB40 11289-1 DELL Inspiron 14z jc pch
BIOS dump of 8.00 MB for the Dell Inspiron 14z with board code DMB40 and board number 11289-1, a Wistron-pattern number, meaning Wistron is the ODM that built the board.
BIOS · 11289-1 · 8.00 MB · 15 Jun 2022BIOS bin8.00 MB - DELL Inspiron 14Z-5423 DMB40
A BIOS image for the Dell Inspiron 14z-5423, labelled DMB40, which is probably the board codename.
BIOS · 8.00 MB · 9 Oct 2025BIOS bin—8.00 MB - Dell Inspiron 14z-5423 DMB40 Intel MB 11289-1
BIOS dump for the Dell Inspiron 14z-5423, Intel platform, project DMB40 and board number 11289-1.
BIOS · 11289-1 · 3.70 MB · 28 Mar 2020BIOS rar3.70 MB - DELL-14Z-5420
Firmware archive for the Dell Inspiron 14z 5420, packed as a 3.74 MB rar file and associated with the Quanta board DA0R08MB6E2.
BIOS · DA0R08MB6E2 · 3.74 MB · 12 Apr 2018BIOS rar3.74 MB - DELL 14Z-5423 DMB40 11289-1-ok(sljbc)
Firmware dump for the Dell Inspiron 14z 5423, board DMB40 with Wistron-style number 11289-1, marked ok by the uploader name, suggesting it was verified working.
BIOS · 11289-1 · 3.06 MB · 27 Mar 2019BIOS rar3.06 MB - DELL Inspiron 14Z-5423 DMB40
BIOS image for the Dell Inspiron 14Z-5423, with DMB40 in the name, which appears to be the board or project code for that model.
BIOS · 8.00 MB · 9 Oct 2025BIOS bin—8.00 MB - Dell XPS 14z Schematics Version
Circuit diagrams for the Dell XPS 14z laptop, supplied as a PDF of 1.32 MB. The name names the model and a generic Version tag but no board number or revision, so read…
Schematic · 1.32 MB · 6 Sept 2017Schematic pdf—1.32 MB - Dell Inspiron 14z 5423 DMB40 intel mb
BIOS dump for the Inspiron 14z 5423 DMB40 board, and the name specifies the Intel motherboard version.
BIOS · 3.70 MB · 15 Jun 2022BIOS zip—3.70 MB - DELL 14Z-5423 DMB40 11289-1-ok(sljbc)
Compressed BIOS dump for the Dell Inspiron 14Z-5423 on board DMB40, number 11289-1, which follows the Wistron board numbering pattern.
BIOS · 11289-1 · 6.75 MB · 7 Mar 2026BIOS rar6.75 MB - Studio 14z
RAR archive labelled only with the Dell Studio 14z model name, 646 KB in size. The name gives no board number, revision or indication of whether the contents are a…
Archive · 646 KB · 22 Jan 2025Archive rar—646 KB - DELL N14Z-411Z-DA0R05MB8D2
BIOS archive for the Dell Inspiron N411Z, also written 14Z, on Quanta board DA0R05MB8D2, about 2.1 MB in RAR form.
BIOS · DA0R05MB8D2 · 2.11 MB · 20 Feb 2018BIOS rar2.11 MB - DELL 5423,,dmb40 intel mb 11289-1
BIOS dump for a Dell 5423 laptop, likely the Inspiron 14z, with the DMB40 project and Wistron board number 11289-1 in the name, for an Intel platform.
BIOS · 11289-1 · 8.00 MB · 10 Sept 2021BIOS bin8.00 MB - dmb40 org
Original BIOS read of 8.00 MB marked dmb40 org. DMB40 is a board code associated with some Dell Inspiron 14z machines, but this name gives no board number or revision.
BIOS · 8.00 MB · 15 Jun 2022BIOS bin—8.00 MB