A schematic diagram for Lenovo hardware (board NM-B421). Shared as “EE480 EE580 NM B421 (REV 1 PDF.rar” — a .rar file, 2.96 MB.
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 @ShareMan_Electronic_Files. Enginerys does not host this file.
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
ZIP archive for the Lenovo ThinkPad E480 with motherboard NM-B421, a board number in the NM pattern used by LCFC, Lenovo's own manufacturing arm.
Lenovo BIOS and EC firmware for the E480 and E580 motherboard, LCFC board number NM-B421 revision 1.0, dated 2017-10-30 and reported as working.
Realtek RTS5455-family USB Type-C PD controller dump for Lenovo board NM-B421, provided as a 46.1 KB RAR archive.
Boardview for the LCFC NM-B421 motherboard found in the Lenovo ThinkPad E480 and E580, packed in a 1.51 MB RAR archive.
Schematic package for the Lenovo ThinkPad E480 and E580, built on the LCFC NM-B421 motherboard, supplied as a RAR archive of about 10.9 MB holding the PDF diagram.