A:AnswerYes don’t need to download anything works perfectly on my MacBook Pro 2019 don’t need to setup anything time machine will pick it up right away.
A:AnswerThe answer to the first part of your question is yes. It does copy any part of your computer, except the movable drives. As for the second part, the answer is yes also but you have to choose the "continuous" backup plan and keep the drive connected to the computer. As such, this option might be suitable for desktops but not for laptops.