Power
The Power specitification for The Analog Thing is rather simple: Any 5V USB power supply should do it. The power demand is really minimal, the integrated DC-DC power supply (TBA 2-0522) can convert 2W of power from 5 VDC to 12 VDC. For the analog computer machine units, see the page about logic levels. For the schematics about power supply in the computer, see File:Anathing v1.0 base 1.pdf.
Note that the USB connector is currently of Type A, which is quite unusual for client-like (non USB host) devices. This will probably change in the future.
Also note that USB is adopted only for power and no data transfer at all. The Analog Thing is analog and a USB communication would require the presence of a digital computer (such as a microcontroller) within the Analog Thing.
