Hub working perfectly with other devices , when I connect the usb miner in device manager I see Unknown Device , I don't think that power is a issue .
sorry to say its looking like it is a power issue. thumb drives and stuff use at most 20% the amount a usb miner does. id be willing to bet either the plug dosnt put out enough current or the hub its self is loosing the current internally.
youve tried them directly in the usb port and they worked so theres only the hub that could be the problem.
options are
1. buy a new powerful hub
2. buy a new powerful mains adapter
3. buy a Molex to Barrel jack so the hub plugs directly into you computer PSU i have a few spare but im in the UK