As you probably know, the only external monitor connection available on the latest Mac Books is a DisplayPort connection.
As you probably don't know (I didn't), DisplayPort implements a copy protection scheme, called DisplayPort Content Protection (DPCP), which prevents copyrighted content from being viewed on non DPCP-compliant screens.
This gibberish means that many owners of new Mac Books can't use their not-so-old VGA/DVI monitor to view copyrighted content they have paid for. I'm sure that pirated content plays fine, though...
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