Video BIOS for the ATI graphics on the ASUS K40AB board, with 2160728018 being the GPU part number given in the name, packed as an 834 KB ZIP.

Zipped boardview for the ASUS K40AD with board number 69N0GFM10B at revision 2.1. The 69N0 prefix is an ASUS board part-number style, useful for matching against the PCB…

K40IN schematic referencing G71G with version 1.0, in a 1.19 MB PDF; G71G appears to be the board or project code and 1.0 its revision, though the name does not spell…

Firmware archive for the ASUS K40IN, board revision 2.2G, on an NVIDIA MCP75L chipset with an ITE IT8502E embedded controller, marked as working.

RAR archive for the K40AB board at revision R1.2, 1.25 MB in size. The name does not say whether it holds a schematic, a boardview or both, though the size suggests…

Archive for the K40AB model with board revision 1.2 stated in the name, about 1.21 MB as RAR.

BIOS image for the ASUS K40ID main board revision 3.0, firmware version 8C, supplied in a 641 KB ZIP.

ASUS schematic covering the K40IJ and K50IJ notebooks, which share one mainboard design, at revision 2.0.

Zip archive containing a boardview for the ASUS K40IN laptop, board 60-NVNMB1100-C24, with 2.2G marking the board revision.

ASUS motherboard schematic shared by the K40IJ and K50IJ notebooks, revision 2.0 according to the r20 marking, with 0309 most likely a date code from March 2009.

Boardview covering the ASUS K40C and K50C notebooks, mainboard revision 2.0, supplied as a 1.56 MB RAR archive.

Raw 1.00 MB BIOS image for the ASUS K40IJ, marked ORG, which suggests an original dump read from a working board rather than a factory update file.

Small 120 KB RAR archive named for the K40 model with a trailing T suffix. What the T stands for is not explained, and the name gives no board number, revision or file…

RAR archive, 1.14 MB, for the ASUS K40AB notebook at board revision R1.3. The name does not say whether it holds a schematic, boardview or both, so open it and look…

Boardview for the ASUS K40AB laptop mainboard, revision 1.3, in a fairly large 14.5 MB ZIP archive.

ASUS schematic covering the K40AA and K50AB models at revision 1.2, stored as a 1.28 MB PDF, suggesting the two laptops share one board design.

Zipped BIOS package for the Asus K40IP notebook, with AS203 in the name most likely marking Asus BIOS version 203 for this model.

ASUS K401LB main board firmware, revision 2.0, containing both the BIOS image and the EC (embedded controller) firmware.

BIOS archive for the ASUS K401UQK laptop, motherboard revision 2.0, packed as a 5.32 MB RAR.

Second copy of the ASUS K40IJ and K50IJ schematic set, revision 2.0, shared between both models as a 2.68 MB PDF.

Shared schematic for the ASUS K40IJ and K50IJ notebooks, revision 1.1, in a 1.63 MB PDF.

BIOS package for the ASUS K40IJ laptop, noting a Winbond W25L8005 flash chip on an Intel Core 2 platform with the GL40 chipset.

BIOS archive for the Acer Aspire E14 notebook on the Compal LA-C611P motherboard. The name also carries K4000, 55ZJ and A4WAS, which look like Compal project or variant…

BIOS image for the ASUS K401UQK notebook, marked as-307 and labelled as tested and working.

Schematic for the Lenovo 3000 K40 and K41A, Compal projects IGT10 and IGT11, board LA-3451P revision 0.1, compressed as a 1.10 MB 7z archive.

RAR archive of 1.25 MB for the ASUS K40IJ and K50IJ notebooks at board revision 1.1. The two models share one mainboard design, so the material applies to either.

ASUS BIOS archive for the K40IJ notebook, sharing its mainboard with the K50IJ, revision 2.1.

Shared schematic for the ASUS K40IJ and K50IJ notebooks at revision 1.1, distributed as a PDF of about 1.63 MB.

BIOS archive for the HP Envy Recline 23-K400 TouchSmart all-in-one desktop. The name gives the model only, without board number, revision or firmware version, so verify…

ASUS firmware archive for the K50IN, also referencing the K40IN and a board revision 2.2G, in a 569 KB ZIP file.

TWRP 3.5.0 recovery covering the Redmi K40, Poco F3 and Mi 11X, which share one hardware platform, packed in a 43.8 MB ZIP.

Uncompressed FZ boardview for the ASUS K40IN notebook on mainboard 60-NVNMB1100-C24, revision 2.2G. The 60- prefix follows ASUS board part numbering.

Custom recovery for the Redmi K40, Poco F3 and Mi 11X, codename alioth, provided as TWRP 3.5.1 build Nebrassy 2 in a 40.3 MB ZIP.

Schematics in PDF for the Lenovo 3000 K40 and K41A, listing the IGT10 and IGT11 project names and the Compal motherboard LA-3451P at revision 0.1.

Working BIOS image for the ASUS K401UQK laptop mainboard, revision 2.0, marked as tested and fully functional, with a note that the fast boot setting is enabled in this…

Tested BIOS dump for an ASUS K401UQK motherboard at revision 2.0, taken from a unit fitted with the Intel Core i5-7200U processor and labelled as one hundred percent…

Schematic for the Poco F3, code name alioth, filed as firmware although the name describes circuit diagrams, in a RAR of about 2.13 MB.

Schematic for the ASUS K50C laptop in PDF format. At only 167 KB it may be a partial set or a compressed drawing, so check how many pages it covers.

BIOS firmware for the ASUS K50ID, with sx076r appearing to be the retail SKU suffix. No board revision is listed, so check the motherboard label before flashing.