A track device includes a first track, a second track slidably received in the first track, and a slide-aiding member mounted between the first track and the second track. The moisture detector is configured to maintain a voltage on a first electrical contact of the port and to detect a short circuit between the first electrical contact and a second electrical contact of the port. The PCBA includes at least one memory integrated circuit and at least one controller IC. The side template is operatively, removably coupled to the front template. When the low power condition does not exist, the high performance graphics processor is turned on and the low power graphics processor and the high performance graphics processor are used to process the graphics data.