Another update -> Several people have asked for the wiring code on the power-plug used on the SAS cage - please note I have used ATX color-coding:
Orange=3.3V
Red=5V
Yellow=12V
Black=Gnd/Negative
Plug was salvaged of an old Server with a SAS cage, but you can find the Molex connector from Molex I would guess.
Fear my MS Paint skilzzz...this should make it real simple:
edit: Yes, I know the plug is not fully inserted, this is just for the sake of these photos.....