It was SB460. After colser looking on it

It was SB460.
After colser looking on it I saw that there is litle brown spot on white letters on it. Over it there was Wireless card that had white paper who was brown on side that goes on top of SB460.
So I have to change it. I don`t have working SB460 right now, but when I find it I will replace it and reply the result.
Thank you guys.