Something niggles in the back of my head about issues if you chain a second USB hub from a first USB hub.
But since you have it ordered, Il'd say try it.
What I would do is take one of the USB OUTs from the first hub and run it to the USB IN of the second hub.
Then set the jumper for the primary hub to USB, and the jumper for the secondary hub to SATA, with a SATA connection.
This way the second hub will not be drawing power from, and possibly overloading the motherboard port.
I hope testing this out, won't fry my stuff. I'm kinda nervous to try. lol