Can power be distributed to USB devices from central supply?
Many require smart controllers for battery chargers, but not cams or mobo/mobile part. 

I prefer a dumb 6 port USB hub with 2.4A per port.  (60W max) cheap. So some peripherals need smart data for charger part but not to operate from external power.

There is a wide range of options or you can route suitable phone wires from your 5V ATX supply with a polyfuse to each plug.