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macOS 10.8 or higher (Mountain Lion or higher)
macOS 10.7 to 10.8 (Lion to Mountain Lion)
macOS 10.5 to 10.6 (Leopard to Snow Leopard)
- SafeSleepOnce 0.9 (does not require administrator password)
macOS 10.3 to 10.4 (Panther to Tiger)
- SafeSleepOnce 0.6 (does not require administrator password)