Hi Folks I have just bought a new monitor from John Lewis. HP 2211X - Full HD Monitor. I have never had such poor sales help in my life. When I was purchasing the Monitor I noticed there were TWO leads going from the back - One Black and One White, as well as the Power Cable "Why the two Leads I asked" ? I was told so I have a choice !!!! What choice I asked ?? It makes no difference it is up to you which one you use !!!!! No matter how I asked the question, I just could not get an answer. Does anybody know: 1) Why two Leads (Black & White going to the computer). 2) Which one should I use ?? 3) Do I need both leads connected as I don't think I have two connections on my computer ?? Sorry if these questions sound daft, but I am so furious at the attitude of the sales person. I have lodged a complaint with the Manager of the department. Thanks for any help. Cheers.