I'd like to recommend creating a account so me or other members can assist you, as guest have limitations in replying here and if we need further Information to communicate with you.
I'll provide a link to register, please come back to your post so we can further assist you . Thank you
tell what tablet and we will be able to tell you exactly what it is for, otherwise, it could be a speaker, sims tray, microsd card tray, reset, or something else.