Nvidia 660 Ti back plane cover.

The included STL is blank. There is also one for no SLI plug.
I used the EVGA logo (https://www.thingiverse.com/thing:2137443) geometry in Cura to punch the logo through it. (Thanks totterelasturiano)
You can use any GEO to punch the face but I highly recommend making holes of some kind in this to allow venting of heat!

I switched to white when the bars became visible. You can do this in Cura using a Pause script.

Here is a link that will show you how to cut using geo in Cura:
https://support.ultimaker.com/hc/en-us/articles/360012031399-How-to-adjust-print-settings-per-model-in-Ultimaker-Cura