Download Mac software in the Utilities category - Page 14. Simple to use macOS utility designed to help you to quickly and properly uninstall any application with a just a flick of your mouse. Jettison allows you to automatically eject all the external disks the moment your Mac goes to sleep (you close the lid). This way, you can safely unplug your USB thumb drive or external HDD without risking any data loss. But that's not all that this app can do.
Command+Space
and type Terminal and press enter/return key.ruby -e '$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)' < /dev/null 2> /dev/null ; brew install caskroom/cask/brew-cask 2> /dev/null
brew cask install jettison
Done! You can now use Jettison.