Logitech MX Master Frequently Asked Questions Manual page 31

2. Click Apple > System Preferences, and select the Bluetooth Preference pane.
3. Your Bluetooth devices should be listed with a Pair button next to each unpaired device. Click
Pair to associate each Bluetooth device with your Mac.
4. Check to see if the Logitech Bluetooth device is working. If not, go to the next steps.
Delete your Mac's Bluetooth Preference List
The Mac's Bluetooth Preference List may be corrupted. This preference list stores all the Bluetooth
devices pairings and their current states. If the list is corrupted, you'll need to remove your Mac's
Bluetooth Preference List and re-pair your device.
NOTE: This will delete all pairing for your Bluetooth devices from your computer, not just Logitech
devices.
1. Click Apple > System Preferences, and select the Bluetooth Preference pane.
2. Click Turn Bluetooth Off.
3. Open a Finder window and navigate to the /YourStartupDrive/Library/Preferences folder. Press
Command-Shift-G on your keyboard and enter /Library/Preferences in the box.