A:AnswerSure, you can use this drive as an external storage medium to download games, however if you have a desktop computer with at least one internal slot free I would highly recommend purchasing an internal SATA drive as the performance will be much higher.
A:AnswerYes! I just installed a 2TB Easystore on my iMac running MacOS 10.15.1 and set it up to run under Time Machine. Just use Disk Utility to reformat the Easy Store (the first Mac format, journaled, in the list) and then add the Easystore to your time machine. Went perfectly for me and just completed my first Time Machine backup on this device.