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My ~20 year old Intellimouse Optical optical functions in Catalina. I would like to be able to use the side-buttons to "go-back" in Safari. I believe (please tell me if this not correct) that intellipoint will unlock this feature.

The instruction's step-1 calls for:

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

Step-1 seems to install brew, however, I am reluctant to execute this command because brew cask has already been used to install applications such as sublime-text.

brew cask install microsoft-office

returns the error:

Error: Cask 'microsoft-intellipoint' is unavailable: No Cask with this name exists.

Per the comments I tried:

brew cask install caskroom/drivers/microsoft-intellipoint

Which returned:

Error: caskroom/drivers was moved. Tap homebrew/cask-drivers instead.

Is there a method to determine the cause of the error without performing Step-1? I am concerned that Step-1 may cause problems as brew is already installed per https://brew.sh If the fix is to perform Step-1 because it somehow adds the equivalent of a repository, I would appreciate an ELI5

Based on this thread I would like to avoid disabling the System Integrity Protection for the very old Microsoft Drivers.

I suspect the side-buttons are sending a signal and it may be possible to configure OS X per the goal.

1 Answer 1


SensibleSideButtons might help with your problem, but keep in mind it is a third-party solution, so there is a chance it won't work properly.

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