• "1120 Keyboard subcard and keyboard-subcard cable" on page 79
• "1130 Trackpad and trackpad cable" on page 80
• "1140 Power button with fingerprint reader assembly" on page 82
• "1150 LCD unit" on page 83
• "1160 System board and buzzer with cable" on page 85
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P1 Gen 4 and X1 Extreme Gen 4 Hardware Maintenance Manual