General Information: Power Buttons
The power button on modular Macintosh models is typically located on the back of the computer close to the right or left side (depending on the model).
Power buttons come in different shapes and sizes. Some are push buttons (round or square), which may be plain, or may include a sideways triangle or a circle with a small straight line inside. Others are toggles, which include a 1 and a 0 (1=On, 0=Off).
General Information: Reset and Interrupt Buttons
The reset and interrupt buttons are located in different areas on different models. Refer to model-specific descriptions below.
The reset button is marked with a small triangle as shown below. Pushing the reset button restarts the computer.
The interrupt button is marked with a circle; if the button is large enough there is a crooked line in the circle, as shown below. It is used by software programmers when writing applications and debugging them.
In some more recent systems, there may not be unique reset or interrupt buttons. In some systems, the power button doubles as a reset and/or interrupt button. Refer to model-specific descriptions for details.
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| Reset button icon | Interrupt button icon |
Keyboard Commands
If the computer does not have a reset button, press the Command-Control-power keys instead.
If the computer does not have an interrupt button, press the Command-power keys instead.
| Professional Models | ||
| Model | Power Button Location | Reset/Interrupt Location |
| Power Macintosh G3 Desktop Power Macintosh G3 Mini Tower |
Front panel | Use keyboard commands |
| Power Macintosh G3 All-In-One | Rear panel | Use keyboard commands |
| Power Macintosh G3 (Blue and White) Power Mac G4 (PCI Graphics) Power Mac G4 (AGP Graphics) |
Front panel | Front panel or use keyboard commands |
| Power Mac G4 (Gigabit Ethernet) Power Mac G4 (Digital Audio) Power Mac G4 (QuickSilver) Power Mac G4 (QuickSilver 2002) |
Front panel | Front panel reset button |
| Power Mac G4 Cube | Top of computer | Underside of computer |
| Power Mac G4 (Mirrored Drive Doors) Power Mac G4 (FW 800) |
Front panel | Use keyboard commands |
| Power Mac G5 (all models) | Front panel | See document 88330 |
| Consumer Models | ||
| Model | Power Button Location | Reset/Interrupt Location |
| iMac 233 MHz iMac 266 MHz iMac 333 MHz |
Front panel | Insert paperclip in reset/interrupt holes on right side of computer |
| iMac (Slot Loading) iMac (Summer 2000) iMac (Early 2001) iMac (Summer 2001) |
Front panel | Right side of computer |
| iMac (Flat Panel) iMac (17-inch Flat Panel) iMac (17-inch 1GHz) iMac (USB 2.0) |
Back left side of computer | See document 88330 |
| eMac eMac (ATI Graphics) eMac (USB 2.0) |
Front panel | See document 88330 |
Note: The parenthetical product descriptions (Summer 2000) and (Summer 2001) refer to the summer of the Northern Hemisphere.