Archive for the Lenovo ThinkPad E550 associated with board NM-A221, a 2.64 MB RAR whose name does not say if it holds a BIOS dump, schematic or boardview. NM-xxxx numbers follow the LCFC pattern, the Lenovo-owned ODM that designs many ThinkPad and IdeaPad boards. Extract it with WinRAR or 7-Zip to see the contents. Whatever it holds, confirm that NM-A221 is printed on your PCB, and if it contains a firmware image, back up the original SPI chip before programming it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
All sources (9)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 12 Nov 2020 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 27 Apr 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 23 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 31 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.