NM-B891 is a LCFC (Lenovo) motherboard used in Lenovo devices. Enginerys has 9 schematics, 5 boardviews, 60 BIOS dumps and 2 archives for this board, collected from public Telegram channels.
Check that NM-B891 matches the number printed on your PCB, including the revision. Where to find it →
NM-B891 schematics
- Lenovo Thinkpad T490s NM-B891 pdfSchematic · NM-B891 · 3.18 MB · 27 Sept 2025Schematic pdf3.18 MB
- NM-B891 PDFSchematic · NM-B891 · 3.18 MB · 29 May 2025Schematic pdf3.18 MB
- X390 NM-B891 Resistance voltage diagramSchematic · NM-B891 · 2.81 MB · 5 May 2025Schematic pdf2.81 MB
- NM B891Schematic · NM-B891 · 3.91 MB · 29 Apr 2025Schematic pdf3.91 MB
- NM-B891Schematic · NM-B891 · 3.91 MB · 14 Sept 2024Schematic pdf3.91 MB
- NM-B891Schematic · NM-B891 · 3.91 MB · 10 Jul 2024Schematic pdf3.91 MB
- Lenovo Thinkpad T490s NM-B891 Schematic
Lenovo ThinkPad T490s schematic in PDF form for the motherboard numbered NM-B891. NM- prefixed numbers come from LCFC, the Lenovo-owned design and manufacturing arm that…
Schematic · NM-B891 · 3.18 MB · 13 Sept 2021Schematic pdf3.18 MB - Lenovo Thinkpad T490s NM-B891 SchematicSchematic · NM-B891 · 2.66 MB · 31 Mar 2021Schematic rar2.66 MB
- Lenovo Thinkpad T490s NM-B891 Schematic
Schematic diagram for the Lenovo ThinkPad T490s mainboard NM-B891, provided in a 2.71 MB RAR archive.
Schematic · NM-B891 · 2.71 MB · 6 Mar 2021Schematic rar2.71 MB
NM-B891 boardviews
- T490s FT491FX390 NM-B891Boardview · NM-B891 · 15.0 MB · 14 Apr 2026Boardview rar15.0 MB
- Thinkpad T490S NM-B891 (BDV)(TVW)
Boardview package for the Lenovo ThinkPad T490s, LCFC motherboard NM-B891, containing BDV and TVW versions in one ZIP.
Boardview · NM-B891 · 1.67 MB · 5 Oct 2025Boardview zip1.67 MB - FT491 FX390 NM-B891 REV;2.0 BDVBoardview · NM-B891 · 686 KB · 19 Jul 2025Boardview rar686 KB
- Thinkpad T490S NM-B891 (BDV)(TVW)Boardview · NM-B891 · 6.29 MB · 5 May 2025Boardview tvw6.29 MB
- Thinkpad T490S NM-B891 (BDV)(TVW)
Boardview for the Lenovo ThinkPad T490s mainboard NM-B891, an LCFC-designed board, supplied as a 737 KB RAR.
Boardview · NM-B891 · 737 KB · 8 Jan 2023Boardview rar737 KB
NM-B891 BIOS dumps
- MEC1633 256K 20260802 153101BIOS · NM-B891 · 256 KB · 2 Aug 2026BIOS bin256 KB
- LENOVO T491 X390 NM-B891 BIOS + ECBIOS · NM-B891 · 16.2 MB · 2 Jul 2026BIOS rar16.2 MB
- FT491 FX390 NM-B891 REV 2.0 2019-01-28 BIOS 100% OKBIOS · NM-B891 · 10.8 MB · 26 Jun 2026BIOS rar10.8 MB
- FT491 FX390 NM-B891 (REV 2.0) (2019-01-28)BIOS · NM-B891 · 16.3 MB · 12 Jun 2026BIOS zip16.3 MB
- NM-B891BIOS · NM-B891 · 32.0 MB · 6 Apr 2026BIOS bin32.0 MB
- PAASSSWORDBIOS · NM-B891 · 32.0 MB · 27 Dec 2025BIOS bin32.0 MB
- EEPROM EC MEC1663 0x02202445 2KB CRC32 0x7892AA24BIOS · NM-B891 · 384 B · 8 Oct 2025BIOS rar384 B
- LENOVO X390 FT491 FX390 NM B891 REV 2 0 2019 01 28 WORKING BIOSBIOS · NM-B891 · 27.7 MB · 24 Sept 2025BIOS zip27.7 MB
- LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 UNLOCKED telegramBIOS · NM-B891 · 13.7 MB · 24 Sept 2025BIOS zip13.7 MB
- LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 i7 8565U WORKINGBIOS · NM-B891 · 13.8 MB · 24 Sept 2025BIOS zip13.8 MB
- LENOVO X390 FT491 FX390 NM B891 REV 1 0 WORKING BIOS 100% telegramBIOS · NM-B891 · 11.1 MB · 24 Sept 2025BIOS zip11.1 MB
- FT491 FX390 NM B891 REV 2 0 2019 01 28 BIOS & TYPE C & MEC 32MBBIOS · NM-B891 · 16.5 MB · 20 Sept 2025BIOS zip16.5 MB
- FT491 FX390 NM B891 REV 2 0 2019 01 28 32MB WORKING BIOS 100% telegramBIOS · NM-B891 · 14.3 MB · 20 Sept 2025BIOS zip14.3 MB
- FT491 FX390 NM B891 REV 1 0 i7 8th Gen 32MB WORKING BIOS 100% telegramBIOS · NM-B891 · 13.9 MB · 20 Sept 2025BIOS zip13.9 MB
- FT491 FX390 NM B891 REV 2 0 2019 01 28 WORKING BIOS 100% telegramBIOS · NM-B891 · 27.6 MB · 20 Sept 2025BIOS zip27.6 MB
- FT491 FX390 NM B891 REV 2 1 0 2019 01 28 WORKING BIOS 100% telegramBIOS · NM-B891 · 27.9 MB · 20 Sept 2025BIOS zip27.9 MB
- LENOVO Thinkpad X390 NM-B891 REV: 2.0 CLEAN ME ++
Full 32 MB BIOS dump for the Lenovo ThinkPad X390, motherboard NM-B891 revision 2.0, with the Intel Management Engine region cleaned according to the name.
BIOS · NM-B891 · 32.0 MB · 31 Jul 2025BIOS bin32.0 MB - X390 NM-B891 1.0 U2101 MY OKBIOS · NM-B891 · 32.0 MB · 13 May 2025BIOS bin32.0 MB
- NM-B891BIOS · NM-B891 · 32.0 MB · 13 May 2025BIOS bin32.0 MB
- NM-B891 REV 2.0 WORKING BIOS 100%BIOS · NM-B891 · 32.0 MB · 13 May 2025BIOS bin32.0 MB
- LENOVO T490S FT491 FX390 NM-B891 REV 2.0 2019-01-28 UNLOCKEDBIOS · NM-B891 · 32.0 MB · 12 May 2025BIOS bin32.0 MB
- NM-B891BIOS · NM-B891 · 32.0 MB · 12 May 2025BIOS bin32.0 MB
- X390 NM-B891 1.0 U2101 MY OKBIOS · NM-B891 · 32.0 MB · 12 May 2025BIOS bin32.0 MB
- NM-B891 REV 2.0 WORKING BIOS 100%BIOS · NM-B891 · 32.0 MB · 12 May 2025BIOS bin32.0 MB
- LENOVO T490S FT491 FX390 NM-B891 REV 2.0 2019-01-28 UNLOCKEDBIOS · NM-B891 · 32.0 MB · 9 May 2025BIOS bin32.0 MB
- X390 NM-B891 1.0 U2101 MY OKBIOS · NM-B891 · 32.0 MB · 9 May 2025BIOS bin32.0 MB
- NM-B891BIOS · NM-B891 · 32.0 MB · 9 May 2025BIOS bin32.0 MB
- NM-B891 REV 2.0 WORKING BIOS 100%BIOS · NM-B891 · 32.0 MB · 9 May 2025BIOS bin32.0 MB
- ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633FBIOS · NM-B891 · 32.0 MB · 5 May 2025BIOS bin32.0 MB
- LENOVO Thinkpad X390 20Q1 NM-B891 REV 2.0 TASTED BY FST FIXBIOS · NM-B891 · 32.0 MB · 5 May 2025BIOS bin32.0 MB
- unlock password Thinkpad x390 NM B891BIOS · NM-B891 · 38.7 MB · 5 May 2025BIOS rar38.7 MB
- LENOVO X390 Type 20Q0, 20Q1 FT491 FX390 NM B891 REV 2 0 Tasted BBIOS · NM-B891 · 32.0 MB · 5 May 2025BIOS bin32.0 MB
- NM B891 Rev 2.0.bin BY AadibBIOS · NM-B891 · 10.6 MB · 29 Apr 2025BIOS rar10.6 MB
- NM B891 MEC1663BIOS · NM-B891 · 288 KB · 29 Apr 2025BIOS bin288 KB
- FT491 FX390 NM-B891 (REV 2.0) (2019-01-28) SM BIOSBIOS · NM-B891 · 10.5 MB · 25 Apr 2025BIOS rar10.5 MB
- LENOVO UNLOCK EC T491 X390 NM-B891
Unlocked EC firmware for Lenovo ThinkPad T491 and X390, LCFC board NM-B891, provided as a 16.2 MB RAR archive. NM-prefixed numbers follow LCFC, Lenovo's own design team.
BIOS · NM-B891 · 16.2 MB · 25 Dec 2024BIOS rar16.2 MB - LENOVO X390 Type 20Q0, 20Q1 FT491 FX390 NM B891 REV 2 0 Tasted BYBIOS · NM-B891 · 32.0 MB · 23 Dec 2024BIOS bin32.0 MB
- LENOVO X390 Type 20Q0, 20Q1 FT491 FX390 NM B891 REV 2 0 Tasted BYBIOS · NM-B891 · 32.0 MB · 23 Dec 2024BIOS bin32.0 MB
- LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 i7 8565U BIOSBIOS · NM-B891 · 11.3 MB · 10 Dec 2024BIOS rar11.3 MB
- LENOVO Thinkpad X390 20Q1 NM-B891 REV 2.0 TASTED BY FST FIX
Tested BIOS dump for the Lenovo ThinkPad X390, machine type 20Q1, on LCFC board NM-B891, revision 2.0.
BIOS · NM-B891 · 10.0 MB · 22 Oct 2024BIOS rar10.0 MB - back-MX25L25633FBIOS · NM-B891 · 32.0 MB · 13 Jul 2024BIOS bin32.0 MB
- LENOVO X390 UNLOCK NM B891 MAIN +EC +EPROM OK TESTED LAN OK 2
Firmware package for the Lenovo ThinkPad X390 on LCFC board NM-B891, labelled unlocked and containing main BIOS, EC firmware and an EEPROM dump.
BIOS · NM-B891 · 11.0 MB · 5 Jul 2024BIOS rar11.0 MB - unlock password Thinkpad x390 NM-B891BIOS · NM-B891 · 38.8 MB · 17 Jun 2024BIOS rar38.8 MB
- FT491 FX390 NM B891 REV 2 0 2019 01 28 BIOS & TYPE C & MEC 32MB
Lenovo firmware set for the LCFC board NM-B891 revision 2.0, with the FT491 and FX390 project codes and a 2019-01-28 date in the name.
BIOS · NM-B891 · 15.4 MB · 11 May 2024BIOS rar15.4 MB - AFS LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 UNLOCKEDBIOS · NM-B891 · 8.15 MB · 1 Feb 2024BIOS rar8.15 MB
- FT491 FX390 NM B891 REV 1 0 i7 8th Gen 32MB WORKING BIOS 100%
Working BIOS for a Lenovo laptop with LCFC board NM-B891 revision 1.0, model codes FT491 and FX390, configured for an 8th generation Intel Core i7 and a 32 MB flash…
BIOS · NM-B891 · 16.0 MB · 20 Jan 2024BIOS rar16.0 MB - FT491 FX390 NM B891 REV 2 0 2019 01 28 32MB WORKING BIOS 100%
Lenovo BIOS dump for an LCFC mainboard numbered NM-B891, revision 2.0, with the FT491 and FX390 platform codes listed in the name.
BIOS · NM-B891 · 14.2 MB · 20 Jan 2024BIOS rar14.2 MB - Thinkpad X390 - NM-B891 CSME CLEAN NTB OK TESTED 8THBIOS · NM-B891 · 10.2 MB · 27 Dec 2023BIOS rar10.2 MB
- FT491 FX390 NM-B891 REV 2.0 2019-01-28 WORKING BIOS 100%
Lenovo BIOS archive for board NM-B891 revision 2.0, carrying the FT491 and FX390 platform codes and a date of 2019-01-28. The name marks it as a fully working dump.
BIOS · NM-B891 · 28.7 MB · 29 Mar 2023BIOS rar28.7 MB - LENOVO X390 FT491 FX390 NM B891 REV 2 0 2019 01 28 WORKING BIOS
Working BIOS for the Lenovo ThinkPad X390 on the NM-B891 mainboard revision 2.0, with FT491 and FX390 project codes and a date of 2019-01-28 in the name.
BIOS · NM-B891 · 30.9 MB · 8 Jan 2023BIOS rar30.9 MB - LENOVO X390 FT491 FX390 NM-B891 REV 1.0 WORKING BIOS 100%
BIOS image set for the Lenovo ThinkPad X390 with mainboard NM-B891 revision 1.0, listed with project codes FT491 and FX390 and described as fully working.
BIOS · NM-B891 · 13.0 MB · 8 Jan 2023BIOS rar13.0 MB - LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 i7 8565U WORKING
Working BIOS for the Lenovo ThinkPad T490s on the NM-B891 board revision 2.0 with project codes FT491 and FX390, dated 2019-01-28 and taken from an i7-8565U…
BIOS · NM-B891 · 15.6 MB · 8 Jan 2023BIOS rar15.6 MB - FT491 FX390 NM-B891 REV 2.0 2019-01-28 WORKING BIOS 100%
Lenovo laptop BIOS dump for board NM-B891 revision 2.0, associated with FT491 and FX390 codes and dated 2019-01-28, reported as 100 percent working; packed into a 29.8…
BIOS · NM-B891 · 29.8 MB · 5 Dec 2022BIOS rar29.8 MB - ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633FBIOS · NM-B891 · 14.8 MB · 27 Apr 2022BIOS rar14.8 MB
- ThinkPad T490S X390 FX390 NM B891 Rev2 0 MX25L25633F 32MB BIOS
BIOS dump for the Lenovo ThinkPad T490s and X390 family (the name also lists FX390), built on board NM-B891 revision 2.0.
BIOS · NM-B891 · 16.2 MB · 17 Jan 2022BIOS zip16.2 MB - ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633F
BIOS dump shared by the ThinkPad T490s and X390, board FX390 NM-B891 revision 2.0, with the Macronix MX25L25633F flash chip named.
BIOS · NM-B891 · 14.8 MB · 16 Nov 2021BIOS rar14.8 MB - LENOVO T490S FT491 FX390 NM B891 REV 2 0 2019 01 28 UNLOCKED
Unlocked BIOS image for the ThinkPad T490s, board FT491 FX390 NM-B891 revision 2.0, dated 2019-01-28.
BIOS · NM-B891 · 12.4 MB · 16 Nov 2021BIOS rar12.4 MB - ThinkPad T490S X390 FX390 NM B891 Rev2 0 MX25L25633F Luirons BiosBIOS · NM-B891 · 14.8 MB · 22 Feb 2021BIOS rar14.8 MB
- T490S X390 FX390 NM-B891 Rev 2.0 MX25L25633F ThinkPadBIOS · NM-B891 · 32.0 MB · 22 Jul 2020BIOS bin32.0 MB
- ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633FBIOS · NM-B891 · 14.8 MB · 15 Jul 2020BIOS rar14.8 MB
NM-B891 archives
- LENOVO THINKPAD T490S LCFC NM-B891Archive · NM-B891 · 17.1 MB · 7 Jun 2026Archive zip17.1 MB
- LENOVO T490S FT491 FX390 NM B891 REV 2.0 2019 01 28
Lenovo ThinkPad T490s archive for motherboard NM-B891 revision 2.0, dated 28 January 2019, with project codes FT491 and FX390.
Archive · NM-B891 · 8.12 MB · 19 May 2025Archive rar8.12 MB
Questions about NM-B891
Is there a schematic for NM-B891?
Yes. Enginerys lists 9 schematic files for NM-B891. Each entry links to the Telegram post where the PDF can be downloaded.
Is there a boardview for NM-B891?
Yes, 5 boardview files are listed. Open them with OpenBoardView or the viewer named on the file page.
Who makes the NM-B891 board?
NM-B891 follows the LCFC (Lenovo) numbering scheme (NM-xxxx). It is found in Lenovo devices.