today an usb hub pair (4-5) on one of my gekko hubs died and the two ports have no voltage anymore 
on each of the two ports 1 gekkosience compac f (580mhz) stick and the corresponding fan were connected
on each of the two ports 1 gekkosience compac f (580mhz) stick and the corresponding fan were connected
I've had the same experience twice already.. seems to happen when the sticks are running at 500+ mhz.
The usb port just goes dead but the stick will keep working fine in a different port. I assume it has something to do with the amperage. I keep them around 425-475 Mhz now and they seem to be happier with that