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Use this guide to install an I/O board containing a USB 3.0 port, HDMI port, and SDXC card reader.
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            Remove the following P5 pentalobe screws securing the lower case to the MacBook Pro: 
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            Eight 3.0 mm 
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            Two 2.3 mm 
 
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            Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro. 
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            Set the lower case aside. 
 
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            Peel back the warning label covering the battery connector. 
 
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            Using the flat end of a spudger, gently pry the battery connector straight up out of its socket on the logic board. 
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            Bend the battery cables back and out of the way, ensuring that the battery connector doesn't accidentally make contact with the logic board. 
 
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            Use a spudger or tweezers to pry the three AirPort antenna cables straight up off of their sockets on the AirPort board. 
 
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            Use the tip of a spudger to push the camera cable's plug toward the fan and out of its socket on the logic board. 
 
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            Insert the flat end of a spudger underneath the rubber heat sink cover on the right fan. 
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            Slide the spudger underneath the length of the cover, releasing the adhesive. 
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            Lift the cover and flip it back so that you can access the cables underneath. 
 
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            Use your fingers to pull the AirPort/Camera cables up off the fan. 
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            Carefully de-route the cables from the plastic cable guide. 
 
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            Using the flat end of a spudger, pry the I/O Board connector straight up out of its socket on the logic board. 
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            In a similar fashion, remove the I/O Board cable connector from its socket on the I/O Board. 
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            Remove the I/O Board cable from the MacBook Pro. 
 
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            Remove the single 2.9 mm T5 Torx screw securing the AirPort card to the logic board. 
 
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            Grasp the sides of the AirPort card and lift it up to a shallow angle (5-10˚) to separate the light adhesive adhering it to the logic board. 
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            Pull the AirPort card parallel out of its connector on the logic board to remove it. 
 
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            Use the tip of a spudger to flip up the retaining flap on the right fan ribbon cable ZIF socket. 
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            Starting at the top of the cable, slide a plastic opening tool under the right fan cable to free it from the logic board. 
 
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            Remove the following three screws securing the right fan to the logic board: 
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            One 4.4 mm T5 Torx screw 
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            One 3.9 mm T5 Wide Head Torx screw 
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            One 5.0 mm T5 Torx screw with 2 mm collar 
 
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            Lift and remove the right fan out from the MacBook Pro. 
 
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            Use the point of a spudger to flip up the locking mechanism on the I/O board connector. 
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            Flip the spudger around and use the flat end to slide the I/O cable out of the connector. 
 
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            Remove the two 3.1 mm T5 Torx screws from the I/O board. 
 
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            Lift the I/O board straight up, out of the device. 
 
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            With the flat of a spudger, release the clip on the right side of the plastic I/O cover. 
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            After releasing the clip, you can easily lift the cover off of the board. 
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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