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- IBM ThinkPad X220 X220T Dasher-1 H0227 schematicSchematic · 1.64 MB · 11 Dec 2023Schematic pdf—1.64 MB
- IBM X220 WISTRON Dasher-1
Archive for the ThinkPad X220 associated with the Wistron Dasher-1 board design, 1.04 MB in RAR format.
Archive · 1.04 MB · 6 Sept 2017Archive rar—1.04 MB - IBM X220 WISTRON Dasher-1
RAR archive for the IBM-branded ThinkPad X220 referencing Wistron and the Dasher-1 project name, about 2.01 MB.
Archive · 2.01 MB · 6 Jan 2023Archive rar—2.01 MB - IBM X220i BIOS H0225-3 48 4KH20.031 LDB-1 MB 8MB BIOS
BIOS dump for the IBM/Lenovo ThinkPad X220i, packed as a RAR archive with an 8 MB image.
BIOS · 5.06 MB · 10 Mar 2025BIOS rar—5.06 MB