Boards NM-B421 1
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- E580 (Type 20KS 20KT) Laptop (ThinkPad) - Type 20KSBIOS · 4.64 MB · 30 Mar 2023BIOS rar—4.64 MB
- E580 (Type 20KS 20KT)BIOS · 4.72 MB · 6 May 2026BIOS 7z—4.72 MB
- E580 Type 20KS 20KT Laptop ThinkPad Type 20KS NM B421 REV 1 TESTED
Lenovo ThinkPad E580 BIOS dump for machine types 20KS and 20KT, taken from a 20KS unit built on the NM-B421 motherboard, revision 1, and marked as tested.
BIOS · NM-B421 · 4.76 MB · 23 Dec 2024BIOS rar4.76 MB