Connecting a Wiimote Plus

[sl23]

I managed to loan a Wiimote with a plus addon.
Opened Dolphin then opened Controller Config.
Changed Wii Controller type to Real Wiimote, didn't work.
Tried the Passthrough but get a window popup saying no USB device found. So obviously the controller isn't connecting to my PC. Incidentally, how does it connect? Is it purely through Dolphin or can you actually connect it to windows and use the controller as any other?

The problem though, apart from this, is that once that popup window opens, Dolphin freezes as I cannot close the popup. The reason I suspect that I can't close it is due to the buttons for OK and IGNORE are completely unusable. They aren't highlighted when I hover over them and cannot be clicked. Whether this is because Dolphin has crashed or not I don't know. But I cannot access the Main GUI game list window either because the popup has taken priority. This means I have to forcibly close Dolphin via Task Manager.

I am unable to follow the Guide for connection due to this issue. Please help.
Though I doubt it'll work as I believe a specific Bluetooth adapter is required, is that still the case?

Thanks for your help

EDIT:
Motherboard - Z97I-PLUS (SOCKET 1150)
BT adapter - Broadcom 0x220E Driver v12.0.1.944