I went for the PCI card option...
https://www.amazon.co.uk/gp/product/B0037AQMJS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
It arrives tomorrow so I let you know if it works. Hooking up to an ASUS Z170 Pro Gaming.....
That link was the only info I could find.