Ok so this one gets weirder. I completely took the non Riing Trio hub out of the system so I am left with 2 Hubs with 9 fans. One of the Hubs will be detected by the system every time - but then disappear from the software after about 5 seconds. This is happening every time. I have tried swapping out the hub since I have spare - exact same behavior. I have tried swapping USB cables, etc. Could it be a fan? They all seem to operate normally. I am at a real loss with this one.