Got the warning triangle next to 'Corsair Link(TM) USB Dongle' with a code 10 error? I have good news.
Turns out the drivers supplied with the CorsairLink software are intended for the AXi series PSUs. The Hydros are supposed to work with the default Windows HID device drivers.
Now stop forcing them to install, wind back any drivers with the error, and enjoy.
All this after I spend 4hrs writing drivers that work. Such is life!!
Got this info from a Corsair employee on the corsair forums!!