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- T400 MLB3I-7BIOS · 8.00 MB · 29 Jan 2021BIOS bin—8.00 MB
- T400 MLB3I-7BIOS · 8.00 MB · 20 Nov 2020BIOS bin—8.00 MB
- THINKPAD T400 (MLB3I-7)Archive · 2.97 MB · 20 Apr 2022Archive zip—2.97 MB
- Lenovo - IBM T400 MLB3I-7 FIXEDBIOS · 4.00 MB · 9 May 2025BIOS—4.00 MB
- THINKPAD T400 (MLB3I-9) PDFSchematic · 972 KB · 13 Sept 2021Schematic pdf—972 KB
- Lenovo - IBM T400 MLB3I-7 OLDBIOS · 4.00 MB · 9 May 2025BIOS bin—4.00 MB
- AFS Lenovo - IBM T400 MLB3I-7 4MBBIOS · 3.89 MB · 1 Feb 2024BIOS rar—3.89 MB
- Lenovo IBM T400 MLB3I 7 4MB telegram BIOS Repair 2025 09 16BIOS · 4.11 MB · 23 Sept 2025BIOS zip—4.11 MB
- IBM T400 MLB3I-7 Boardview
Boardview for the IBM-branded ThinkPad T400 with the board code MLB3I-7, packed as a ZIP archive.
Boardview · 853 KB · 5 Jun 2022Boardview zip—853 KB - THINKPAD T400 (MLB3I-9) PDF
Schematic in PDF format for the Lenovo ThinkPad T400 on the MLB3I-9 board revision, compressed to a 954 KB RAR archive.
Schematic · 954 KB · 28 Aug 2021Schematic rar—954 KB - THINKPAD T400 (MLB3I-7)
BIOS image for the Lenovo ThinkPad T400 on the MLB3I-7 board, packed into a 3.01 MB ZIP archive.
BIOS · 3.01 MB · 28 Aug 2021BIOS zip—3.01 MB - Lenovo - IBM T400 MLB3I-7 4MB
Firmware image for the Lenovo IBM ThinkPad T400 on the MLB3I-7 board, stated as a 4MB flash dump, delivered as a 3.94 MB RAR archive.
BIOS · 3.94 MB · 28 Aug 2021BIOS rar—3.94 MB