That wallwart will work,IF the barrel connector is 2.1mm x 5.5mm.
I used these,just make sure you have positive & negative correct,on a normal PC PSU,yellow is positive,black is negative:
http://www.amazon.com/gp/product/B0058RLD9C/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1Each orb can use up to 10 watts,so only put 2 on 1 4pin molex cable=20 watts.I made my cables with these 4pin molex connectors:
http://www.frozencpu.com/cat/l3/g51/c387/s999/list/p1/Connectors-4_Pin_Connectors-Molex_-_Male-Page1.htmlhttp://www.frozencpu.com/products/1926/ele-94/FrozenCPU_ConnectRight_Standard_4-pin_Male_Connector_-_Black.html?tl=g51c387s999Be sure to add the pins,they do not come with them unless you check the box below marked "Add Gold Plated Male Pins",you don't need the gold ones,regular are fine
Also,on a 4pin molex you have 12 volt (yellow) & 5 volt (red) each has it's own negative (black),it's closest to each,keep them paired
May not make a difference,but I keep em paired & have no issues.
You only use the 12 volt wires,you don't need the 5 volt,so just use 2 pins (yellow & black wire next to it) in your 4pin molex connector
Here's one I made for 6pin PCIE to run 3 orbs
I ran 20 orbs off one 6pin PCIE=150-200 watts.