Methods and systems for managing financial transactions. The adjuster allows adjustment of the length of the belt between the adjuster and the fastening end. A supply of very fine wire is held in a drum and passes through the straightening unit which straightens the wire, bends and kinks being thereby removed. While traveling up, the wings are powered by a positive lift force and drag force while using negative lift force and drag force when traveling downward. The second component has a second set of mechanical one-way connectors. The cover is rotatably received in the groove, and the cover is operable of rotating relative to the display around the hinge, to cover or expose the keyboard region.