Hi.
If you have a look at the connection of the Aquaduct, you can see (from left to right)
1. the power connection between computer and aquaduct
2. the USB-connection between the computer and aquaduct
3. the outlet of the aquaduct (see piture below)
4. the inlet of the aquaduct (see picture below)
I hope this will help you.
Please ask if you have any other questions.
Kind Regards.