Boards NM-B901 5
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- T490 mecBIOS · 256 KB · 5 May 2025BIOS bin—256 KB
- T490 mec.binBIOS · 132 KB · 22 Dec 2025BIOS zip—132 KB
- T490 mec.binBIOS · 132 KB · 22 Dec 2023BIOS zip—132 KB
- LENOVO THINKPAD T490 N2IET29W U2101 U5502 & MEC ICBIOS · 10.2 MB · 21 Oct 2023BIOS rar—10.2 MB
- LENOVO THINKPAD T490 N2IET29W U2101 U5502 & MEC IC telegram BIOSBIOS · 11.6 MB · 24 Sept 2025BIOS zip—11.6 MB
- EEPROM EC MEC1663 t490BIOS · 2.00 KB · 17 Feb 2024BIOS bin—2.00 KB
- T490 mec.bin
Small zipped firmware file of 132 KB for the ThinkPad T490, named as MEC, which points to the embedded controller firmware for a Microchip MEC-series EC.
BIOS · 132 KB · 18 Dec 2025BIOS zip—132 KB - LENOVO THINKPAD T490 N2IET29W U2101 U5502 & MEC IC
Firmware set for the Lenovo ThinkPad T490, built around BIOS version N2IET29W, with dumps for the U2101 and U5502 chips plus the MEC embedded controller.
BIOS · 10.3 MB · 21 Oct 2023BIOS rar—10.3 MB - Lenovo ThinkPad T490 NM-B901 FT490 FT492 FT590 FP531 photo
Photo archive of 57.7 MB for the Lenovo ThinkPad T490 mainboard NM-B901, with FT490, FT492, FT590 and FP531 codes listed in the name.
BIOS · NM-B901 · 57.7 MB · 22 Dec 2023BIOS zip57.7 MB - LENOVO THINKPAD T490 T590 FT490 FT492 FT590 FP531 NM B901 REV 1
Firmware package for Lenovo ThinkPad T490 and T590, with board codes FT490, FT492, FT590 and FP531, built on LCFC motherboard NM-B901 revision 1.
BIOS · NM-B901 · 29.9 MB · 6 May 2023BIOS rar29.9 MB - LENOVO~1BIOS · NM-B901 · 21.4 MB · 5 Sept 2026BIOS rar21.4 MB
- LENOVO~1BIOS · NM-B901 · 21.4 MB · 26 Jul 2026BIOS rar21.4 MB
- LENOVO~1BIOS · NM-B901 · 21.4 MB · 8 May 2026BIOS rar21.4 MB