With newer versions of Mac OS X, APC’s recommendation is to use Energy Saver instead of PowerChute. Even when used with older compatible versions of Mac OS X, you may need to “disable sleep mode,” asĭescribed here. She confirmed that PowerChute may have problems with Mac OS X versions beyond 10.4.8. I talked with an APC representative about these matters. Instead, the list ends with Mac OS X 10.4.8. Another “updated” item, covering APC compatibility with Macs, never even mentions Leopard. One article, ironically highlighted as “updated,” contained a reference to the Extensions Manager control panel, a software relic from Mac OS 9.

Instead, I was dismayed to find that its Knowledge Base was hopelessly out of date.

I held out hope that APC’s Web site might provide further illumination. While not every APC owner with an Intel Mac reports having these symptoms, many do. Or you may find that the option to have the APC unit shut down your Mac after a power failure does not work. You may have trouble putting your Mac to sleep whenever you try, the Mac may immediately re-awaken. However, even with Energy Saver appearing correctly, other symptoms may emerge. By itself, this is not a great cause of concern, as you should be able to use Energy Saver instead (unless your Energy Saver text disappears). I quickly learned that APC’s PowerChute software is not compatible with Leopard. Seeking further confirmation of this statement, I turned to the Web.

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