Windows or Linux? Both have built in drivers for monitors.Plug it in and turn it on, it's not going to hurt your graphics card, graphics cards do a really good job of doing that to themselves. No need of a CD, why in this day and age would anyone need a CD to add a monitor? The only reason I could possibly think of for a manufacturer to include a CD is that it's full of unneeded/unwanted bloatware.
I'd think the CD would have any drivers required for the USB style monitor....my Acer monitor had drivers on the CD according to Best Buy.