Actually... I've kinda overhauled the setup.... I have it working with 3x-24" VG249QE monitors on a 2011 MacMini (OSX) and also a 2nd SSD for BootCamp (Windows10). Also can remove the eGPU and connect it to my MacBook Pro laptops if I need gaming on the go.
I imagine if I post the link to my eGPU setup (from another forum) that might be frowned upon, so as to not tick anyone off here a few of the many pictures from that site. (If you want to know the other forum name/url, PM me and I can let you know).
I'm using the Dell DA-2 power supply (slightly modified), IMHO, its far more superior to the Rocksoul unit.
I actually dissembled the Rocksoul PSU to inspect it and it is very cheaply made and I mean VERY CHEAPLY made! Gobs of glue/goop all over the components, which look like they were assembled by a kindergartens class. Components are bent out of place. Just very unimpressed by it. The DA-2 is a lot heavier duty, when I took it apart you can instantly see a difference in technologies being used.
Case modified with grill/EVGA logo
Custom harness from eBay that I re-worked so it would match the pin-out for the DA-2, cleaned it up with some heatshrink. Its a 8-pin connector that plugs into the 8-pin DA-2 with a barrel connector for the case power
A layout of the components I used....