They are a ceramic farite and are used to reduice electrical noise. If your having a problem you loop the wire through them and snap them closed. John
When I got my Samsung 4272 plasma, there were some clam shell type things with it. They are some type of metal or ceramic material surrounded by plastic. It appears they might close around a cable and snap shut. An uneducated guess is they might be for reducing electrical noise or interference. The manual says zilch about them. Thanks.