Mark the DC14 dovetail is aluminum.
See photo #4, the power supplie goes into that box and it powers everything.
It has 13.8V , 5V and 8.3V outputs, so i can power the mount the usb hub and my Canon 10D.
The switch-mode is 13.8 Volt and 12 Amps, so plenty of juice
See here:
http://www.jaycar.com.au/productView...y&form=KEYWORD