Acer V277 Lifecycle Extension Manual page 13

Step9. Lock middle frame screw (in red circle)
Step10. If with speaker model, assembly speaker on middle frame, and assembly speaker cable on main
board. (red and white cable is on left side, yellow and black is on right side.)
Step11. Tape speaker cable with acetate cloth tape (in yellow circle) and yellow tape (in blue circle)
Step12. Insert key board FFC on main board, B277 with USB hub model also need to insert USB FFC on
main board.
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