Not sure which component you're referring to, I'm afraid - can you explain a bit further?
Mcafee device control helps you monitor and restrict data copied to removable storage devices and media to keep it from leaving company control. I don't know if this is part of EPO 4.5 or it is seperate software that needs to be purchased. I am looking on the web for answers.
Ah, OK - that's part of the DLP (Data Loss Prevention) suite of products. It's not part of ePO, but it integrates with it.