A coin-operated player operable entertainment machine has a main display device, such as rotatable symbol-bearing reels, which selects a combination of symbols at a win zone after a game-play stake has been credited. A torso support unit, which is affixed to the patient independently of the pelvic support unit, is connected to the base by one or more powered articulations which are actuable around respective axes of motion. In the optical connector plug, the outer cover is pressed by an optical connector adapter so as to move backward while compressing the spring, whereby a shutter is opened and the optical plug is allowed to protrude forward from the outer cover.