A:Answerthis is plug n play, should be recognized under my computer. if its not, i suspect u have a bad drive. 2 obvious choices, plug into someone else computer and verify or return. very rare, but i have seen a bad cable before. you could try plugging it in and rebooting and see if it gets detected under startup.
fyi, 3.0 is backwards compatible in most cp's. will read 2.0 unless its a 3.0 port - the speeds are DRASTICALLY different. 3.0 ports are typically blue.
A:AnswerYes. And you can set it to back up data automatically whenever a change is made to the files you are backing up. In that case, it needs to be connected to the computer full-time.