Tripp Lite U215-004-R owner manual Hotkey Control Problems in Mac OS
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Troubleshooting (continued)
•Select Energy Saver, then change system sleep mode to “Never.”
2. Hotkey Control Problems in Mac OS
When you use the hotkey (ALT-F11) to control USB Sharing under MAC OS, turn on the “Function” keys in the Keyboard item, and turn off the Sticky keys in the Universal Access item (both are in the System Preferences).