This article describes the location of power, reset, and interrupt buttons on all Macintosh PowerBook models.

General Information: Power Buttons

The Power button on PowerBook models is usually located on the back panel of the unit close to the left side, or ahead of the keyboard just below the display bezel. Refer to your Users Guide or Mac Help for the exact location and function of the power button on your specific PowerBook model.

General Information: Reset and Interrupt Buttons

The Reset and Interrupt buttons are usually located in the back panel of the PowerBook, near the left hand side. Most, but not all, PowerBook models have both Reset and Interrupt buttons. Refer to your Users Guide or Mac Help for the exact location and function of the Reset and Interrupt button on your specific PowerBook model.

The Reset button is marked with a small triangle. Pushing the Reset button restarts the PowerBook; it is the same as turning the power switch off and then on.

The Interrupt button is marked with a small circle as shown in Figure 1 below. It is typically used by software programmers when writing applications and debugging them. Pushing the Interrupt button produces a blank dialog box on the Macintosh screen. Programmers can then type codes to obtain the response or information they require from the Macintosh.

Figure 1. Programmer's or Interrupt button