Component Secured to Screw type Quantity Screw imageHard-drive bracket Hard drive M3x3 4Heat sink System board M2x3 3Hinges Palm rest and keyboardassembly M2.5x5 5Hinge brackets Display back-cover andantenna assembly M2.5x4 8Hinge brackets Display back-cover andantenna assembly M2x2 2I/O board Palm rest and keyboardassembly M2x4• 1 (for computersshipped withoptical drive)• 2 (for computersshipped withoutoptical drive)Optical-drive bracket(Applicable only on thecomputers shippedwith optical drive)Optical drive M2x3 2Optical-driveconnector board(Applicable only on thecomputers shippedwith optical drive)Palm rest and keyboardassembly M2x2 Big Head 1Power-adapter port Palm rest and keyboardassembly M2x3 1Power-button board Palm rest and keyboardassembly M2x2 1Power button withfingerprint reader(optional)Palm rest and keyboardassembly M2x2 1Solid-state drive Palm rest and keyboardassembly M2x2.2+0.8 1System board Palm rest and keyboardassembly M2x4 1Touchpad Palm rest and keyboardassembly M2x2 4Wireless-card bracket System board M2x3 110 Removing and installing components
