The manage device tab only allows you to remove a device . I would like to add a computer to itunes and not remove any other devices. There are only 2 devices hooked up any help is welcome. Thanks
Welcome to the Apple Support Communities! I'm sorry to hear you are having these issues with iTunes. I am a bit unclear on exactly what you are looking to do and why, but if you are trying to authorize or associate your computer with your iTunes Store account, you may find the information and steps outlined in the following articles helpful: