Sounds like your pulling too much power from your USB sockets.
The yoke and pedals are fine, I think you will find if you plug in ONLY the yoke/pedals, they will work properly, its when you start plugging in the power draining items like the panels that things start going pear shaped as the amp drain on the USB system increases a LOT...
Try just the yoke/pedals on their own...
If all is fine, then plug in only the switch panel, if it goes pear shaped, you know your USB system doesnt have enough juice, if it works fine, then try the multi panel, and repeat.
I had to get 2 powered USB hubs to run all my kit, each hub @ 4 amps (7 ports)
I have the yoke, pedals, switch panel, backlit info panel, radio panel, multi panel and 6 flight info gauges (12 USB's in total) and learned this all the hard way just like you are..
When you do get a USB powered hub, make sure its at least 500mAh per-port, as some will say 6 ports, 3 amps, but are NOT 500mAh per-port, and will stil cause you problems like I had, so when I swapped out the USB hubs for 2 Belkin slim hubs, all worked perfectly.