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    LENOVO Thinkpad X1 Yoga 4th Gen FX490 NM-B861 REV 1.0 (Type 20QF, 20QG)

    ThinkpadX1 Yoga 4th Gen (Type 20QF, 20QG) FX490 NM-B861 REV 1.0 FX490 NM-B861 (REV 1.0) Schematic FX490 NM-B861 (REV 1.0) Boardview
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