You may download the data both in windows and mac format. A fast and stable internet connection is necessary. We recommend 50MBit/sec or more. For the download, an overall of 140 GB of free space on the internal drive or an external drive is necessary. You may perform test downloads using the conTimbre InstallerUpdater if you are not sure about the speed and quality of your internet connection. Additionally, you may always order the data on hard drive.