Introduction
prereq for removing IO board side display screws and heatsink screw
Tools
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Remove the two 4.9 mm T8 Torx screws securing the antenna cable retainer on the left display hinge to the upper case.
 
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Push the antenna cable retainer out of the way and remove the single 3 mm T5 Torx screw securing the end of the heat sink to the upper case.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.