Acer X3810 User Manual

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Chapter 3
Removing the Front I/O and Card Reader Boards 
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Disconnect one end of the USB, 1394, and audio cables from the I/O and card reader boards, then open 
the cable retention clip. 
9.
Disconnect the other end of the USB, 1394, and audio cables from the mainboard.  
10. Remove the front I/O and card reader board bracket.