While they are using USB cables, the Aquabus Power is 12V (USB is 5V) so do not plug a USB device into the Apex.
The EnergyBar (powerstrip) also provides the 12v power on the Aquabus. Which powers all of the modules. The Apex base unit does have a 12v auxiliary power connection (I have that hooked to a battery backup) to be able to get alarms if you loose power, or a cable gets unplugged.
These are USB-A Male, Male cables. The apex comes with 3 foot versions. You can use USB extension cables, or just order longer cables from electronic supply or cable stores.