Can’t connect the third party mouse and keyboard because you have to do the initial system setup to be able to open system preferences and add to bluetooth. Therefore I can’t use the computer until I find a wired mouse and keyboard (which the computer does not come with) to do the setup. Wish I would’ve known this ahead of time. Was under the impression that it’d come with apple keyboard and mouse which apparently have the option to plug in manually, but the third party backups mouse/key are only battery powered and will not automatically connect to the imac. Pretty dumb. I cannot use the computer yet.