NM-B391 is a LCFC (Lenovo) motherboard used in Lenovo devices. Enginerys has 3 schematics, 6 boardviews, 19 BIOS dumps and 6 archives for this board, collected from public Telegram channels.
Check that NM-B391 matches the number printed on your PCB, including the revision. Where to find it →
NM-B391 schematics
- NM-B191 Y520 MB N17P SVT 20161125-1430
Schematic set for the Lenovo Legion Y520 mainboard NM-B191, with NM-B391 also linked to it, both LCFC board codes.
Schematic · NM-B191 · 1.48 MB · 25 Jun 2026Schematic zip1.48 MB - Lenovo Legion Y520 15IKBN DY512 NM B191 NM B391 SchematicPDFPKSchematic · NM-B191 · 1.47 MB · 25 Jun 2026Schematic rar1.47 MB
- Lenovo Legion Y520-15IKBN DY512 NM-B191 NM-B391 Schematic
Schematic for the Lenovo Legion Y520-15IKBN, platform DY512, covering LCFC boards NM-B191 and NM-B391, delivered as a 1.51 MB RAR archive.
Schematic · NM-B191 · 1.51 MB · 16 Mar 2021Schematic rar1.51 MB
NM-B391 boardviews
- DY520 NM-B391 REV;1.0 2017-04-14 BOARDVIEW(BDV)PK
Boardview in BDV format for the Lenovo DY520 mainboard NM-B391, revision 1.0 dated 2017-04-14, compressed as RAR.
Boardview · NM-B391 · 2.04 MB · 7 Oct 2026Boardview rar2.04 MB - NM-B391 R10Boardview · NM-B391 · 7.13 MB · 26 Sept 2025Boardview zip7.13 MB
- NM-B391 R10Boardview · NM-B391 · 17.1 MB · 6 May 2025Boardview tvw17.1 MB
- NM-B391 R10Boardview · NM-B391 · 7.13 MB · 27 Sept 2023Boardview zip7.13 MB
- NM-B391 R10Boardview · NM-B391 · 7.13 MB · 8 Mar 2023Boardview zip7.13 MB
- NM-B391 R10 (BDV)(.TVW)
Lenovo boardview for the NM-B391 motherboard, revision R10, in TVW format inside a 2.19 MB RAR archive. The NM- prefix points to LCFC, Lenovo's own board designer.
Boardview · NM-B391 · 2.19 MB · 8 Mar 2023Boardview rar2.19 MB
NM-B391 BIOS dumps
- LENOVO DY520 NM B391 REV;1 0 2017 04 14 i7 7th BIOS 100% OK
BIOS dump for the Lenovo DY520 motherboard, board number NM-B391 revision 1.0 dated 2017-04-14, for the Intel Core i7 7th generation version, marked as 100% working.
BIOS · NM-B391 · 5.57 MB · 7 Oct 2026BIOS rar5.57 MB - R720 DY520 NM B391 REV 1 0 BIOS AND KBC telegram BIOS Repair 2025BIOS · NM-B391 · 5.22 MB · 25 Sept 2025BIOS zip5.22 MB
- Lenovo Y520 15IKBM NM B391 REV 1 NVIDIA N17E G1 A1 SR30W SR32Q telegramBIOS · NM-B391 · 5.36 MB · 24 Sept 2025BIOS zip5.36 MB
- LENOVO R720 15IKBM DY520 NM B391 REV 1 0 2017 04 14 WORKING BIOSBIOS · NM-B391 · 5.16 MB · 24 Sept 2025BIOS zip5.16 MB
- LENOVO R720 15IKBM DY520 NM B391 REV 1 0 2017 04 14 i7 7700 1060BIOS · NM-B391 · 5.16 MB · 24 Sept 2025BIOS zip5.16 MB
- Lenovo Legion Y520 15IKBN NM B391 Rev v1 BIOS+ EC bios telegramBIOS · NM-B391 · 5.30 MB · 24 Sept 2025BIOS zip5.30 MB
- Lenovo Legion Y520 15IKBN DY520 NM B391 Rev 1 telegram BIOS RepairBIOS · NM-B391 · 5.30 MB · 24 Sept 2025BIOS zip5.30 MB
- NM-B391 uc3BIOS · NM-B391 · 8.00 MB · 9 May 2025BIOS8.00 MB
- AFS Lenovo Legion Y520-15IKBN NM-B391 Rev.v1 BIOS+ EC bios
Firmware set for the Lenovo Legion Y520-15IKBN laptop, board NM-B391 revision v1, containing both the main BIOS and the EC (embedded controller) firmware in a 5.01 MB…
BIOS · NM-B391 · 5.01 MB · 1 Feb 2024BIOS rar5.01 MB - AFS Lenovo Legion Y520-15IKBN DY520 NM-B391 Rev.1
Lenovo Legion Y520-15IKBN BIOS archive for board DY520 NM-B391 revision 1, compressed as a 5.01 MB RAR file.
BIOS · NM-B391 · 5.01 MB · 1 Feb 2024BIOS rar5.01 MB - AFS Lenovo Y520 15IKBM NM B391 REV 1 NVIDIA N17E G1 A1 SR30W SR32QBIOS · NM-B391 · 5.07 MB · 1 Feb 2024BIOS rar5.07 MB
- LENOVO R720 15IKBM DY520 NM B391 REV 1 0 2017 04 14 i7 7700 1060
BIOS dump for the Lenovo Legion R720-15IKBM, LCFC board DY520 NM-B391 revision 1.0 dated 2017-04-14, from a configuration with an Intel Core i7-7700 and a GTX 1060 GPU.
BIOS · NM-B391 · 6.68 MB · 26 Apr 2023BIOS rar6.68 MB - LENOVO R720 15IKBM DY520 NM B391 REV 1 0 2017 04 14 WORKING BIOS
Working BIOS image for the Lenovo R720-15IKBM on LCFC board DY520 NM-B391, revision 1.0, 2017-04-14.
BIOS · NM-B391 · 8.51 MB · 26 Apr 2023BIOS rar8.51 MB - Lenovo Legion Y520-15IKBN NM-B391 Rev.v1 BIOS+ EC biosBIOS · NM-B391 · 5.02 MB · 20 Apr 2022BIOS rar5.02 MB
- R720 DY520 NM-B391 REV 1.0 BIOS AND KBC
BIOS and keyboard controller (KBC) firmware for a Lenovo machine labelled R720, on LCFC board NM-B391 revision 1.0, project DY520.
BIOS · NM-B391 · 4.99 MB · 3 Aug 2021BIOS rar4.99 MB - Lenovo Legion Y520-15IKBN NM-B391 Rev.v1 BIOS+ EC bios
BIOS and EC firmware for the Lenovo Legion Y520-15IKBN, built on LCFC motherboard NM-B391, revision v1. LCFC is Lenovo's own ODM, and its boards carry NM- numbers.
BIOS · NM-B391 · 5.06 MB · 3 Aug 2021BIOS rar5.06 MB - Lenovo Y520 15IKBM NM B391 REV 1 NVIDIA N17E G1 A1 SR30W SR32Q
BIOS firmware package for the Lenovo Legion Y520-15IKBM built on the LCFC NM-B391 motherboard, revision 1.
BIOS · NM-B391 · 5.12 MB · 3 Aug 2021BIOS rar5.12 MB - Lenovo Legion Y520-15IKBN DY520 NM-B391 Rev.1 (Luirons Bios)BIOS · NM-B391 · 5.01 MB · 22 Feb 2021BIOS rar5.01 MB
- Lenovo Legion Y520-15IKBN DY520 NM-B391 Rev.1
Firmware for the Lenovo Legion Y520-15IKBN on the LCFC NM-B391 board, revision 1, with DY520 noted as the project code, supplied as a 5.02 MB RAR.
BIOS · NM-B391 · 5.02 MB · 7 Nov 2020BIOS rar5.02 MB
NM-B391 archives
- LENOVO DY520 NM-B391 REV;1.0 2017-04-14 PHOTO HD
High-resolution photo set of the Lenovo DY520 motherboard NM-B391, revision 1.0 dated 2017-04-14, delivered as a RAR archive of about 10 MB.
Archive · NM-B391 · 9.98 MB · 7 Oct 2026Archive rar9.98 MB - NM-B391 R10Archive · NM-B391 · 7.13 MB · 4 Aug 2026Archive zip7.13 MB
- LENOVO Legion Y520-15IKBN NM-B391 PHOTO
Photo archive of the Lenovo Legion Y520-15IKBN motherboard, board number NM-B391. NM-prefixed numbers come from LCFC, Lenovo's own design arm.
Archive · NM-B391 · 10.0 MB · 1 Oct 2025Archive rar10.0 MB - NM-B391 R10Archive · NM-B391 · 7.13 MB · 12 Sept 2025Archive zip7.13 MB
- DY520 NM-B391 (REV 1.0)Archive · NM-B391 · 5.02 MB · 10 Jul 2023Archive rar5.02 MB
- Lenovo Y520 15IKBM NM B391 REV 1 NVIDIA N17E G1 A1 SR30W SR32QArchive · NM-B391 · 5.08 MB · 20 Apr 2022Archive rar5.08 MB
Questions about NM-B391
Is there a schematic for NM-B391?
Yes. Enginerys lists 3 schematic files for NM-B391. Each entry links to the Telegram post where the PDF can be downloaded.
Is there a boardview for NM-B391?
Yes, 6 boardview files are listed. Open them with OpenBoardView or the viewer named on the file page.
Who makes the NM-B391 board?
NM-B391 follows the LCFC (Lenovo) numbering scheme (NM-xxxx). It is found in Lenovo devices.