How to use your MacBook in closed-clamshell mode

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How to use your MacBook in closed-clamshell mode

I was setting up my MacBook Pro with Retina display to work with a new external monitor today, thinking that when I connected to the monitor via HDMI and closed the lid, I’d see the display up on the new<span class="ellipsis">…</span><div class="read-more">Read more ›</div><img width='1' height='1' src='' border='0'/><br clear='all'/>

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