The geniuses at TT built a fan controller for USB 2.0. A standard that only TT uses and now I too am stuck with over priced fans and a controller that can't be detected. It is infuriating.
If they just would have went with 4 pin connectors this problem of not detecting a controller would be solved by simply using another brands software and controller. Instead it's years of the same complaint from thousands of customers.
I'm so dine with TT I tell.all of.my friends not to buy their ####product. I would suggest you do the same because they don't give a #### about the customer. This has been a problem for years. I wish that I would have researched TT controller problems before purchasing this garbage. There is no fix. They basically lie to you and sell you something that isn't factually true and functioning. Its a borderline class action lawsuit.
By the way your controller is probably fine I've tried 4 none of them work. Its hilarious that they are in here telling you that their controllers are garbage and to spend more of your money to replace their garbage with more of their garbage.
Do yourself a favor bite the loss and buy a different brand.