Check database for similar value , MySQL

I have a table server like this;

Model | Brand
 -------------------
 M4000 | Dell
 S4000 | Hp
 S3500 | Hp
 S6500 | Sun
 

I want to display different data from the 'Brand' field which means I don't want the second 'Hp' data to display again. How do I do that?

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