LCFC boardLaptop mainboardUpdated 2026-09-15
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NM-B421 schematic, boardview & BIOS

LCFC board used in Lenovo ThinkPad E580, Lenovo ThinkPad E480 E580, Lenovo Thikpad E480, Lenovo Thikpad E580 E590 and 1 more models. EE580 EE480 Lenovo ThinkPad E580 Lenovo ThinkPad E480 E580 Lenovo Thikpad E480 Lenovo Thikpad E580 E590 Lenovo ThinkPad E480

Files for NM-B421 (17)

TypeFormatFile nameRev SizeAddedDownloadMirror
Schematic .pdf Thinkpad E580 LCFC NM-B421 BoardView PDF.pdf — 188 KB Telegram #1 #2
Schematic .pdf Thinkpad E580 LCFC NM-B421 DIS E480 E580 r1.0.pdf 1.0 11 MB Telegram #1
Boardview .rar LENOVO E480 - NM-B421 Rev1.0 BoardView (BDV)(.TVW) .rar 1.0 1.5 MB Telegram —
Boardview .rar LENOVO E480 - NM-B421 Rev1.0 BoardView (BDV)(.TVW) .rar 1.0 1.5 MB Telegram —
Boardview .zip LENOVO E480 - NM-B421 Rev1.0 BoardView (BDV)(.TVW).zip 1.0 3.7 MB Telegram #1
BIOS .rar E480-EE580 NM-B421 REV 1.0 2017-10-30 BIOS & EC OK.rar 1.0 4.8 MB Telegram —
BIOS .zip EE480 EE580 NM-B421 REV 1.0 2017-10-30 BIOS 7 KBEC OKOK.zip 1.0 7.3 MB Telegram —
BIOS .zip THINKPAD_E480_EE480_EE580_NM_B421_REV_1_0_2017_10_30_AMD_216_0905004.zip 1.0 8.0 MB Telegram —
BIOS .rar E480 EE580 NM-B421 REV 1.0 2017-10-30 BIOS & EC.rar 1.0 5.2 MB Telegram —
BIOS .rar E580_Type_20KS_20KT_Laptop_ThinkPad_Type_20KS_NM_B421_REV_1_TESTED.rar 1 4.8 MB Telegram —
BIOS .rar LENOVO THIKPAD E580 E590 NM-B421 REV 1 TESTED BY FST FIX.rar 1 4.7 MB Telegram —
BIOS .rar NM-B421 REV 1_TESTED BY FST FIX.rar 1 4.7 MB Telegram —
BIOS .rar AFS Lenovo E480 E580, NM-B421 clear me.rar — 4.7 MB Telegram —
BIOS .rar AFS Lenovo Thinkpad E480 E580 LCFC NM-B421 Rev1.0 2017-10-30.rar 1.0 4.7 MB Telegram —
BIOS .rar AFS Lenovo Thinkpad E480 E580 LCFC NM-B421 Rev1.0vvv.rar 1.0V 4.7 MB Telegram —
BIOS .rar AFS_Lenovo_ThinkPad_R480_NM_B421_1_0_EE480_EE580_original_16_MB.rar — 4.7 MB Telegram —
BIOS .rar Lenovo_Thikpad_E480_EE480_EE580_NM_B421_REV_1_0_2017_10_30_TESTED.rar 1.0 4.8 MB Telegram —

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Models using this board

Model names are taken from the file names as published; always confirm the board number printed on your PCB.