Lenovo · laptop motherboard

Lenovo ThinkPad X1 NM-C661

SchematicBIOS
Board code
NM-C661
Platform
GX490
Made by
LCFC
Revisions
Rev 1.0
Files
6
Updated

Lenovo ThinkPad X1 NM-C661 is a laptop motherboard designed by LCFC and used in the Lenovo ThinkPad X1 and Lenovo ThinkPad X1 Carbon.

The catalog has 2 schematics and 4 BIOS files for it, posted between 2021 and 2026 across 5 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.0; other revisions of the same board can differ in parts and layout.

The schematic files are PDFs; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

BIOS notes: some archives also hold EC/KBC firmware. 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 GX490.

Compatible models

Files for Lenovo ThinkPad X1 NM-C661

Schematics 2 All schematics →

BIOS and firmware 4 All bios and firmware →

Notes from the source posts

  • ┄┅┅••⋆°𓄼 𓄹°⋆••┅┅┄
  • You can give us as a gift.

Frequently asked questions

Which laptops use the NM-C661 motherboard?
File names in the catalog tie NM-C661 to the Lenovo ThinkPad X1 and Lenovo ThinkPad X1 Carbon. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-C661 do I have?
Files for this board mention 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.
What should I check before flashing the NM-C661 BIOS?
Read the original chip with a programmer and save two copies before writing anything. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

Guides for this board

Similar boards

Browse more

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