How can I use my Apple laptop closed with an external display?

Answer:

• Simply connect your Apple laptop with an external monitor, a keyboard and a mouse. Your laptop will run with the lid closed. Apple calls it "Closed Clamshell Mode". (cable adaptor may be needed)
• Now your laptop works as a desktop, allowing you to work comfortably by raising your eye level for better posture, less strain on your eyes, neck and back.
• Visit the following Apple support page for complete step-by-step instructions:
  http://support.apple.com/kb/ht3131

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Question:

Which laptops are Desktop Chair compatible with?

Answer:

Desktop Chair is a versatile product that fits all Apple laptops with a height of 1.2" (30mm) or less including:

• All MacBook Pro models
  
• All MacBook models
  
• All MacBook Air models
  
• All PowerBook G4 models
  
• and probably all models in the future!