NM-B521 is a LCFC (Lenovo) motherboard used in Lenovo devices. Enginerys has 7 schematics, 3 boardviews, 27 BIOS dumps and 1 archive for this board, collected from public Telegram channels.
Check that NM-B521 matches the number printed on your PCB, including the revision. Where to find it →
NM-B521 schematics
- LENOVO NM-B521 REV 1.0 2017-10-06 PDF
Lenovo laptop schematic in PDF for motherboard NM-B521, revision 1.0, with a drawing date of 2017-10-06 given in the name.
Schematic · NM-B521 · 1.69 MB · 6 Mar 2026Schematic pdf1.69 MB - LENOVO NM-B521 REV 1.0 2017-10-06 PDF(PK)Schematic · NM-B521 · 1.69 MB · 6 Mar 2026Schematic pdf1.69 MB
- Lenovo ThinkPad X280 FN1KR 2 LCFC EX280 NM B521 Rev 0 3 BoardVieSchematic · NM-B521 · 243 KB · 6 May 2025Schematic pdf243 KB
- AFS..NM-B521 x280 FN1KR-3 PDF
Lenovo laptop schematic in PDF form for board NM-B521, with the name also carrying the model token x280 and the internal code FN1KR-3.
Schematic · NM-B521 · 964 KB · 23 Feb 2024Schematic pdf964 KB - NM-B521 x280 FN1KR-3 PDFSchematic · NM-B521 · 1.69 MB · 16 Nov 2022Schematic pdf1.69 MB
- NM-B521 x280 FN1KR-3 PDF
Schematic in PDF form for the Lenovo ThinkPad X280, board NM-B521 with project code FN1KR-3, archived as RAR.
Schematic · NM-B521 · 1.54 MB · 5 Feb 2022Schematic rar1.54 MB - Lenovo ThinkPad X280 FN1KR 2 LCFC EX280 NM B521 Rev 0 3 BoardView
Lenovo ThinkPad X280 document from LCFC, project EX280, board NM-B521 at revision 0.3, with FN1KR_2 in the name.
Schematic · NM-B521 · 243 KB · 13 Sept 2021Schematic pdf243 KB
NM-B521 boardviews
- Lenovo ThinkPad X280 FN1KR 2 LCFC EX280 NM B521 Rev 0 3 BoardViewBoardview · NM-B521 · 243 KB · 8 Sept 2023Boardview rar243 KB
- Lenovo ThinkPad X280 FN1KR 2 LCFC EX280 NM B521 Rev 0 3 BoardViewBoardview · NM-B521 · 243 KB · 7 Dec 2022Boardview zip243 KB
- Lenovo ThinkPad X280 FN1KR 2 LCFC EX280 NM B521 Rev 0 3 BoardView
Boardview for the Lenovo ThinkPad X280 on LCFC board NM-B521, revision 0.3, with EX280 and FN1KR-2 as project codes.
Boardview · NM-B521 · 289 KB · 2 Mar 2021Boardview rar289 KB
NM-B521 BIOS dumps
- LENOVO X280 Laptop Thinkpad NM B521 REV 1 0 2017 10 06 BIOSBIOS · NM-B521 · 5.96 MB · 10 Jul 2026BIOS rar5.96 MB
- LENOVO X280 Type 20KF,20KE Laptop Thinkpad Type 20KE EX280 NM B521BIOS · NM-B521 · 6.08 MB · 24 Sept 2025BIOS zip6.08 MB
- LENOVO THINLPAD X280 EX280 NM B521 REV 1 0 2017 06 10 i5 8250U WORKINBIOS · NM-B521 · 6.03 MB · 24 Sept 2025BIOS zip6.03 MB
- LENOVO THINKPAD X280 EX280 NM B521 REV 2 0 2018 03 29 8th gen CPUBIOS · NM-B521 · 6.21 MB · 24 Sept 2025BIOS zip6.21 MB
- LENOVO EX280 NM B521 REV 1 0 2017 10 06 BIOS & MEC TESTED BIOS telegramBIOS · NM-B521 · 6.16 MB · 24 Sept 2025BIOS zip6.16 MB
- LENOVO ThinkPad EX280 NM b521 Rev 1 0 X280 Type 20KF, 20KE telegramBIOS · NM-B521 · 6.34 MB · 24 Sept 2025BIOS zip6.34 MB
- EX280 NM B521 REV 2 0 2018 03 29 WORKING BIOS 100% telegram BIOSBIOS · NM-B521 · 12.2 MB · 20 Sept 2025BIOS zip12.2 MB
- LENOVO X280 Type 20KF,20KE Laptop Thinkpad Type 20KE EX280 NM B521BIOS · NM-B521 · 6.14 MB · 21 Aug 2025BIOS rar6.14 MB
- LENOVO X280 Type 20KF,20KE Laptop Thinkpad Type 20KE EX280 NM B521
BIOS archive for the Lenovo ThinkPad X280, machine types 20KF and 20KE, on the LCFC board NM-B521.
BIOS · NM-B521 · 6.34 MB · 20 Aug 2025BIOS rar6.34 MB - NM-B521 MEC EEPROMBIOS · NM-B521 · 2.00 KB · 9 May 2025BIOS bin2.00 KB
- NM-B521 MECBIOS · NM-B521 · 288 KB · 9 May 2025BIOS bin288 KB
- LENOVO ThinkPad X280 NM-B521 R2.0BIOS · NM-B521 · 16.0 MB · 5 May 2025BIOS bin16.0 MB
- X280 Type 20KF, 20KE Laptop ThinkPad Type 20KE NM B521 REVBIOS · NM-B521 · 16.0 MB · 5 May 2025BIOS bin16.0 MB
- THINKPAD X280 NM-B521 REV 1 TYPE-C TESTED BY FST FIXBIOS · NM-B521 · 1.00 MB · 5 May 2025BIOS bin1.00 MB
- NM B521 X280BIOS · NM-B521 · 16.0 MB · 29 Apr 2025BIOS bin16.0 MB
- THINKPAD X280 NM-B521 REV 1 TYPE-C TESTED BY FST FIX
Type-C firmware for the ThinkPad X280 on LCFC board NM-B521 revision 1, marked tested. At only 104 KB this is not a main BIOS image but most likely the firmware for the…
BIOS · NM-B521 · 104 KB · 23 Dec 2024BIOS rar104 KB - X280 Type 20KF, 20KE Laptop ThinkPad Type 20KE NM B521 REV 2 0 TASTED
Firmware archive for the Lenovo ThinkPad X280, types 20KF and 20KE, dumped from a 20KE unit on LCFC board NM-B521 revision 2.0 and marked as tested.
BIOS · NM-B521 · 8.10 MB · 23 Dec 2024BIOS rar8.10 MB - BIOS EX280 NM-B521 REV 2.0 2018-03-29 CLEAN ME OKOK
BIOS for board NM-B521 revision 2.0 with EX280 in the name, dated 2018-03-29, with the Management Engine region cleaned and marked as verified.
BIOS · NM-B521 · 6.17 MB · 13 May 2024BIOS rar6.17 MB - EX280 NM-B521 REV 2.0 2018-03-29 WORKING BIOS 100%
Working BIOS dump for a Lenovo machine on the EX280 platform, LCFC board NM-B521 revision 2.0, dated 2018-03-29 in the name.
BIOS · NM-B521 · 17.3 MB · 12 May 2024BIOS rar17.3 MB - NM-B521 X280
Raw 16 MB binary BIOS dump for the Lenovo ThinkPad X280 on board NM-B521. The NM- prefix follows LCFC numbering, the Lenovo ODM that designs many ThinkPad boards.
BIOS · NM-B521 · 16.0 MB · 27 Feb 2024BIOS bin16.0 MB - AFS LENOVO ThinkPad EX280 NM b521 Rev 1 0 X280 Type 20KF, 20KE
Firmware archive for the Lenovo ThinkPad X280, machine types 20KF and 20KE, on LCFC motherboard NM-B521 revision 1.0, 6.07 MB in RAR form.
BIOS · NM-B521 · 6.07 MB · 1 Feb 2024BIOS rar6.07 MB - LENOVO EX280 NM B521 REV 1 0 2017 10 06 BIOS & MEC TESTED BIOS
Tested BIOS package for the Lenovo EX280 on the LCFC board NM-B521 revision 1.0, dated 2017-10-06, including both the BIOS and the MEC embedded controller firmware.
BIOS · NM-B521 · 11.6 MB · 28 Sept 2023BIOS rar11.6 MB - LENOVO THINKPAD X280 EX280 NM B521 REV 2 0 2018 03 29 8th gen CPU
BIOS archive for the Lenovo ThinkPad X280 on board NM-B521 revision 2.0 with EX280 project code, dated 2018-03-29 and marked for 8th generation CPUs.
BIOS · NM-B521 · 11.0 MB · 21 Jun 2023BIOS rar11.0 MB - LENOVO THINLPAD X280 EX280 NM B521 REV 1 0 2017 06 10 i5 8250U WORKING
Working BIOS for the Lenovo ThinkPad X280, board NM-B521 revision 1.0 dated 2017-06-10, with EX280 as the project name and taken from a unit with an Intel Core i5-8250U.
BIOS · NM-B521 · 8.92 MB · 17 Jun 2023BIOS rar8.92 MB - LENOVO ThinkPad EX280 NM b521 Rev 1 0 X280 Type 20KF, 20KE
Lenovo ThinkPad X280 BIOS package for machine types 20KF and 20KE, built on LCFC board NM-B521 revision 1.0, with the project code EX280.
BIOS · NM-B521 · 6.08 MB · 18 Jan 2021BIOS rar6.08 MB - X280 Type 20KF, 20KE EX280 NM b521 Rev 1 0 Lonovo ThinkPad MainBIOS · NM-B521 · 16.0 MB · 22 Jul 2020BIOS bin16.0 MB
- X280 Type 20KF, 20KE EX280 NM b521 Rev 1 0 Lonovo ThinkPad ECROMBIOS · NM-B521 · 256 KB · 22 Jul 2020BIOS bin256 KB
NM-B521 archives
- X280-NM-B521 clearme test okArchive · NM-B521 · 5.79 MB · 27 Jun 2026Archive rar5.79 MB
Questions about NM-B521
Is there a schematic for NM-B521?
Yes. Enginerys lists 7 schematic files for NM-B521. Each entry links to the Telegram post where the PDF can be downloaded.
Is there a boardview for NM-B521?
Yes, 3 boardview files are listed. Open them with OpenBoardView or the viewer named on the file page.
Who makes the NM-B521 board?
NM-B521 follows the LCFC (Lenovo) numbering scheme (NM-xxxx). It is found in Lenovo devices.