What are the key differences between a laptop and a desktop computer? Your response should contain at least 2 placeholders represented by square brackets, such as [address]. Your answer must contain exactly 3 bullet points. Use the markdown bullet points such as: * This is point 1. Include the keywords [portability], [upgradability], [cost] in the response. Highlight at least 1 section in your answer with markdown, i.e. *highlighted section*.
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