I'm using the wall outlet. The only USB port on the TV is on the back, in the middle of the set. Actually the only setting I have used is for English subtitles and those I could set from the Stick on the TV.
Fractal Design R5 | Asus Z170 Pro | Intel i5 6600k | 16 GB G.Skill Ripjaws DDR4 2133 | Seasonic 650w PSU | eVGA GTX 550 TI | Samsung 960 M2 500 GB | Samsung 850 EVO 500 GB | ASUS Burner | Windows 7 64-bit