There are four different energy-related control panels in System 7.5.

• Auto Power On/Off
• CPU Energy Saver
• Energy Saver
• Screen

The first two control panels shut the COMPUTER off, and the second two put the MONITOR into a sleep state. All four control panels only work on certain Macintosh computers. In addition, the Energy Saver control panel requires an Energy Star-compliant monitor as well as a Macintosh computer compatible with this software. See the chart at the end of this article for a list of compatible systems.

Auto Power On/Off

This control panel can only be used on computers that can be turned off by using the Shut Down command (soft power off) and that have the "Cuda" ADB controller chip. The chart at the end of this article lists the Macintosh models this control panel is compatible with.

Not included with all system software prior to System 7.5

CPU Energy Saver

This control panel did not ship with system software older than System 7.5, although it was released separately before System 7.5.

Energy Saver

This feature requires an Energy Star-compliant monitor. Compliant models include:

• Apple Color Plus 14-in. Display
• Macintosh Color Display (newer M1198LL/B version)
• Apple AudioVision 14 Display
• Apple Multiple Scan 15, 17, and 20 Displays

NOTE: Not included with system software prior to System 7.5, although it was made available separately.

This feature did not come preinstalled on some Performa 630- and 6110-series systems and was not included on the backup CDs that shipped with these systems. Customers who want the Energy Saver software can copy it from the disk that comes with the Multiple Scan 15 Display. (Be sure not to copy the Display Enabler extension, since the Performa 630- and 6110-series systems have the Display Enabler's functionality built into the hardware.)

If Energy Saver is installed on a computer that has an incompatible monitor, the monitor goes black after the specified inactivity period has passed, but the incompatible monitor is NOT in low power mode, and therefore is NOT saving energy. Monitors that do not support this Energy Saver function, or monitors that use video cards, are not harmed by the installation of this control panel, but they do not save energy with Energy Saver installed.

The Energy Saver control panel has a slider bar to adjust the monitor inactivity period, from 15 to 60 minutes. Energy Saver can be turned on by clicking the check box nearest the slider bar. The settings take effect immediately; you do not need to restart the computer.

When the Apple Energy Star-compliant monitor has been inactive (that is, you have not used the mouse or keyboard) for the time specified in the Energy Saver control panel, the screen of the monitor goes black. This indicates that the monitor is in low-power mode, and is saving energy. The computer is still functioning.

The monitor returns to a fully active state approximately 20 seconds after you use the keyboard or mouse. You hear a number of beeps while the screen is updated to reflect its current state. (The beep volume cannot be adjusted; it is independent of all system sound controls.)

Screen

The Screen control panel can only be used on certain "all-in-one" Macintosh systems, such as the LC/Performa 500-series.

This feature shipped with some Performa 630-series systems and appears to work, but does not really save energy. The Screen control panel should be removed from these systems. Use the Energy Saver control panel in its place.

When to Use Which Energy Saving Control Panels

SYSTEM	FOR MONITORS		FOR COMPUTER
	Energy Saver	Screen	Auto Power Saver On/Off	CPU Energy
COMPACT MACINTOSH SYSTEMS
Macintosh 128K, 512K, 512Ke, XL	NO	NO	NO	NO
Macintosh Plus, SE, SE/30	NO	NO	NO	NO
Classic, Classic II, Performa 200	NO	NO	NO	NO
Color Classic, Color Classic II	NO	YES	YES	OK
MACINTOSH II SYSTEMS
Macintosh II, IIx, IIfx	YES	NO	NO	YES
Macintosh IIcx, IIci	YES	NO	NO	YES
Macintosh IIsi, IIvi, IIvx	YES	NO	YES	OK
MACINTOSH LC SYSTEMS
Macintosh LC, LC II, LC 475	NO	NO	NO	NO
Macintosh LC III	YES	NO	NO	NO
Macintosh LC 520, 550, 575, 580	NO	YES	YES	OK
Macintosh LC 630	YES	NO	YES	OK
MACINTOSH CENTRIS & QUADRA SYSTEMS
Macintosh Quadra 605	NO	NO	NO	NO
Macintosh Centris/Quadra 610	YES	NO	NO	NO
Macintosh Quadra 630	YES	NO	YES	OK
Macintosh Centris/Quadra 650	YES	NO	NO	YES
Macintosh Centris/Quadra 660AV	YES	NO	NO	NO
Macintosh Quadra 700	NO	NO	NO	YES
Macintosh Quadra 800, 840AV, 950	YES	NO	YES	OK
Macintosh Quadra 900	NO	NO	YES	OK
MACINTOSH PERFORMA SYSTEMS
Performa 200	NO	NO	NO	NO
Performa 250, 275	NO	YES	YES	OK
Performa 400, 405, 410, 430	NO	NO	NO	NO
Performa 450, 460, 466, 467	YES	NO	NO	NO
Performa 475, 476	NO	NO	NO	NO
Performa 520, 550, 560	NO	YES	YES	OK
Performa 570-, 580-series	NO	YES	YES	OK
Performa 600	YES	NO	YES	OK
Performa 630-, 640-series	YES	NO	YES	OK
Performa 5200-series	NO	YES	YES	OK
Performa 6100-series	YES	NO	NO	NO
Performa 6200-series	YES	NO	YES	OK
POWER MACINTOSH SYSTEMS
Power Macintosh 5200/75 LC	NO	YES	YES	OK
Power Macintosh 6100/60, 6100/66	YES	NO	NO	NO
Power Macintosh 6200/75	YES	NO	YES	OK
Power Macintosh 7100/66	YES	NO	YES	OK
Power Macintosh 7100/80	YES	NO	YES	NO*
Power Macintosh 8100/80	YES	NO	YES	OK
Power Macintosh 8100/100, 8100/110	YES	NO	YES	NO*
Power Macintosh 9500-series	NO	NO	NO	NO

Text Chart of Energy Star Compliant Apple Products

* NOTE: These Power Macintosh computers included the Connectix Desktop Utility (CDU) software. The CPU Energy Saver was not enabled for these machines. The Connectix Desktop Utility makes these units Energy Star Compliant.

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