Could I buy something such as these:
http://www.ebay.com/itm/RockMiner-R-Box-3ft-Power-Cable-2-PK-PCI-E-to-3x-5-5mm-x-2-5mm-DC-barrel-plugs/252249359993?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140602152332%26meid%3D7abd8ff08a634895b766ef3464a79517%26pid%3D100011%26rk%3D3%26rkt%3D6%26sd%3D261644107927
And plug in the respective 6 pin ATX psu connectors to power the akitio in order to make use of the psu power for a more powerful card?
Though, I'm not entirely sure why there are 3 barrel connectors on the other end, I assume you only use one.