(You may need to scroll down.) Hold the pointer over the keyboard, mouse, or trackpad in the list, then click Connect. On your Mac, choose Apple menu > System Settings, then click Bluetooth in the sidebar.

If you're asked to enter a passcode, enter the passcode on the keyboard that you're setting up. Make sure the batteries are charged and properly inserted in the keyboard, mouse, or trackpad and the device is turned on and discoverable.

When your device appears in Bluetooth preferences, click Connect.

Choose Apple menu  > System Settings (or System Preferences), then click Bluetooth.

After removing the device, turn it off and back on. Or move your pointer over the device's name, then click the remove button. Click the Show Detail button , then click Forget This Device.

If the LED turns on briefly but doesn't blink, the device might be connected to another Mac that is nearby. On that Mac, choose Apple menu  > System Settings (or System Preferences), then click Bluetooth.

If the LED never turns on, you might need to change the device's batteries.

Turn on your device. Its LED should start blinking to show that it's discoverable and ready to be paired.If you're using a laptop computer, you can use its built-in trackpad during setup. To set them up, you need a wired or wireless mouse or trackpad that is already connected to your Mac.

Earlier models of Apple's wireless input devices don't have a Lightning port.

Set up logitech mouse mac