Questions about Adata HV620S

the new adata external hard drive does not work, it appears in the finder sidebar but is inaccessible

Can I also use it to save data from the Mac?

I bought the part, I'm happy with it, but it's not very stable, which means if it fell down I'd have 100 parts and it would be broken, very thin plastic, not hard plastic, like a cheap toy car...But one more question, what does it look like inside? It's very quiet and when you put your hand on it, no movement inside, even though it's running or reading or writing.When I hold my hand on the WD hard drive, it rumbles a lot, but nothing here.New hardware inside for hard drives ?

Runs on the new operating system of the iMac CATALINA or ? Just because it is not in the text...neglected ?

Does the part work with Linux (e.g. Ubuntu)?

Why does the box light up blue and not work? If it lights up and sounds, it should have power, so why do I read in forums that there is a "dual cable" if the USB doesn't supply enough current? And why is the support so incredibly crap? And a hint to the creators of the specifications here the link to the manufacturer's page is not de but en ;)

Does anyone have the read and write speeds at hand?

Ist diese Festplatte mit time machine von mac compatibel?

Buy of the day. Slim and elegant. With USB 3.1. Who knows?