Screws

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These are the screws used in the XO laptop, and their locations. This is part of the Disassembly and Repair guides.

From left to right:

• (A) M2x.4 x 4mm - the common blackened ones. There are a lot of these - use anywhere a specific type of screw is not specified.
• (B) M3x.45 x 5mm - There are 4 of them. These attach the hinge to the bottom half of the laptop.
• (C) M2x.4 x 6mm - the long shiny ones. There are 6 of them. Four are used to attach the back cover (over the motherboard). Two are used to hold the hinge cover together, one on each side.
• (D) M2x.4 x 2mm - the short shiny ones. There are 4 of them. 2 of these hold the keyboard controller circuit board in place, the other two help screw the keyboard to the keyboard bezel. Holes for these screws are marked with this symbol: .

Not shown:

• fat M2x.4 x 0.3in - the screen screws. These are cushioned by 4 black rubber ring bumpers and hold the screen in place.
• M2.5x.45 x 0.5in - The antenna ear screws. Four of these hold the antenna ear clamps in place. (This is a non-standard pitch for this diameter.)

The screws are metric (ISO). The number immediately after the M is the rough diameter (in mm), followed by the pitch (in mm) after the first 'x'. The length is indicated after the second 'x'. Two of our screws have a precise length in english units, but not metric units.