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Detailed specifications - ThinkPad X61, X61s - Lenovo Support
Lenovo ThinkPad X61 - Notebookcheck.net External Reviews
Category:X61 - ThinkWiki
Review Lenovo Thinkpad X61T Notebook / Tablet-PC
ThinkPad X61: The Subnotebook That Got a Second Chance
Lenovo ThinkPad X61s review: Lenovo ThinkPad X61s - CNET
ThinkPad X series - Wikipedia
Lenovo ThinkPad X61s Review - Laptop Mag
Lenovo ThinkPad X-Series X61 Tablet PC Retro Review: - YouTube
Lenovo Thinkpad X61s - Notebookcheck.net External Reviews