Futurebit team has confirmed on e-mail:
Hi the USB version is designed to be shutdown via the power switch. If you are using another computer and not an apollo there is no way to shut it down via USB as this functionality is only possible with the full node unit.
Hi standard units controlled with a third part pc can only be shutdown with the power switch in the back.
FutureBit Team
hello@futurebit.ioHad I known this, I would never buy this device. Now, I have to use 24/7 or not at all. Cannot temperature or time control it. Once internet goes down or want it to idle, it just continues to burn full power forever.
It's an issue with USB reset on windows devices for the new Apollo. Have not been able to do much testing on windows but if there are apps or a "reset" command you can send over the COM port it should turn it off.
Other option is to use a smart plug and shut it on/off that way if you cant physically access it.