Hello there, recently I bought a C-band LNB and when I unpacked the box, I find they have provided some marble look alike piece inside along with little black sticker. I'm not sure as to what that is for. Can anyone help me with it as to what should I do with that marble(or whatever it is) on my LNB?
Here are photos of the piece I'm talking about. Any information/help would be highly appreciated.
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