3 To remove I/O board:
a Remove the M2.5x5.0 screws that secure the thunderbolt bracket to the computer [1].
b Lift the bracket from the thunderbolt connector [2].
c Remove the M2.5x5.0 screws that secure the I/O board to the computer [3].
d Lift the I/O board upwards to and remove it from the computer.
Installing the left IO board
1 Slide the I/O board into its slot on the computer.
2 Install the thunderbolt bracket.
3 Replace the M2.5x5.0 screws to secure the I/O board to the computer.
4 Install the:
a palmrest
b keyboard
c hard drive
d base cover
e battery
f battery cover
5 Follow the procedures in After working inside your computer.
Removing the right Input-Output - IO board
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a SD card
b battery cover
c battery
d base cover
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Disassembly and reassembly