Lenovo · laptop motherboard

Lenovo IdeaPad 330-15IKB NM-B451

SchematicBoardviewBIOS
Board code
NM-B451
Platform
EG721
Made by
LCFC
Revisions
Rev 0.2, Rev 1.0
Files
15
Updated

Lenovo IdeaPad 330-15IKB NM-B451 is a laptop motherboard designed by LCFC and used in the Lenovo IdeaPad 330-15IKB, Lenovo IdeaPad 320-15IKB and Lenovo ThinkPad P50.

The catalog has 4 schematics, 3 boardview files and 8 BIOS files for it, posted between 2021 and 2025 across 3 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 0.2 and Rev 1.0). Check the revision printed on your PCB before relying on a boardview or flashing a BIOS dump — How to Open .FZ Boardview Files explains why it matters.

The boardview comes in .BDV and .TVW format. .TVW files usually need FlexBV or the viewer they were exported for; OpenBoardView handles .BRD, .BDV and .FZ. See OpenBoardView: Installation and First Steps.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: file names mention 8 MB chip sizes. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform EG721.

Compatible models

Files for Lenovo IdeaPad 330-15IKB NM-B451

Schematics 4 All schematics →

Boardview files 3 All boardview files →

BIOS and firmware 8 All bios and firmware →

  • EG521 EG522 EZ511 EG721 NM-B451 (REV 1.0).zip 5.2 MBRev 1.0
    Download from Telegram
  • IdeaPad330-15IKB EG521EG522EZ511EG721 NM-B451 REV1.0.BIN.zip 5.1 MBRev 1.0.BIN
    Download from Telegram
  • EG521_EG522_EG751_EG721_NM_B451_REV_1_0_2017_06_26_7GEN_TH_BLUE.rar 10 MBRev 1.0
    Download from Telegram
  • LENOVO_IDEAPAD_330_15IKB_EG521EG522EZ511EG721_NM_B451_REV_1_0_2017.rar 5.8 MBRev 1.0
    Download from Telegram
  • LENOVO_THINKPAD_P50_EG521EG522EZ511EG721_NM_B451_REV_1_0_2017_06.rar 9.3 MBRev 1.0
    Download from Telegram
  • LENOVO_IDEAPAD_330_15IKB_EG521EG522EZ511EG721_NM_B451_REV_1_0_2017.rar 4.9 MBRev 1.0
    Download from Telegram
  • EG521EG522EZ511EG721_NM_B451_REV_1_0_2017_06_26_WORKING_BIOS_100%.rar 6.1 MBRev 1.0
    Download from Telegram
  • LENOVO_EG521EG522EZ511EG721_NM_B451_REV_1_0_2017_06_26_8MB_BIOS.rar 5.0 MBRev 1.0
    Download from Telegram

Notes from the source posts

  • You can give us as a gift.

Frequently asked questions

Which laptops use the NM-B451 motherboard?
File names in the catalog tie NM-B451 to the Lenovo IdeaPad 330-15IKB, Lenovo IdeaPad 320-15IKB and Lenovo ThinkPad P50. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-B451 do I have?
Files for this board mention Rev 0.2 and Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the NM-B451 boardview file?
The boardview for NM-B451 is available as .BDV and .TVW. .BDV usually opens in OpenBoardView (free) or FlexBV. .TVW usually needs FlexBV or the matching viewer. See What Is a Boardview File and Why You Need One.
What should I check before flashing the NM-B451 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 8 MB images; the dump size must match your chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file