Looks like the link to get the USB driver for the Quad Cortex is dead. The link should be fixed or deleted. At least on the web page I navigated to (see below). Pretty sure I downloaded this driver before but setting up on a different PC now.
UPDATE: Found a working link for the USB driver here although the description makes it look like it is only the iLok License Manager. Nope, that is the USB driver. As soon as you open the URL below the USB driver downloads automatically. A little confusing if you don’t notice the immediate download, as all you then see is the iLok download:
To the moderator, seems like a working link to download the QC’s Windows/Mac drivers would be a good candidate to pin, if pinning topics is allowed in this forum.