Cover for CU320 Option Port / CBE20 expansion

This is a cover for the expansion port on CU320 (Siemens drive controller).

If you have the Profibus variant, you can add the CBE20 card to add Profinet capabilities. Once the card is gone, you usually find out that the cover is long gone, and you have huge hole in your industrial hardware. 

I made 3 versions - one, with original air ducts, completely solid cover, and solid + “CBE20” text on it.

You also need 2x M3 screws to secure it - if you lost the original screws too.