A sliding mechanism comprising a double-folded flexible printed circuit board (FPC); a stiffener coupled to the double-folded FPC; first pins; second pins; and an opening defined by a first cover, wherein when the double-folded FPC and the stiffener move, within the opening, in synchronization along a first range of motion to an open position of the slider mechanism, the stiffener makes contact with the first pins at the open position, and when the double-folded FPC and the stiffener move, within the opening, in synchronization along a second range of motion to a closed position of the slider mechanism, the stiffener makes contact with the second pins at the closed position.