An input device may include a housing, a scroll wheel having an arresting surface, and a lever pivotable about a pivot axis between first and second lever arms of the lever for moving a first free end portion of the first lever arm to engage or disengage the arresting surface. The input device may further include a rotary to linear motion converter having a rotary input axis and a linear output axis. The rotary to linear motion converter may be configured to apply a linear output motion along the linear output axis, converted from a rotary input motion about the rotary input axis, to move a second free end portion of the second lever arm so as to pivot the lever about the pivot axis for engaging or disengaging the first free end portion and the arresting surface to interchange the scroll wheel between a free-wheeling and a resistive-wheeling mode.