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I meant to say SSD bracket. I found meanwhile on eBay they are quite cheap, but there are some more expensive as well, I haven't read what those offer extra.
 
I meant to say SSD bracket. I found meanwhile on eBay they are quite cheap, but there are some more expensive as well, I haven't read what those offer extra.

The answer is: it depends. If I remember well, my unibody 2009 Macbook allows mounting 2.5", 7.5mm thick SSDs. There are usually two form factors: 7.5mm and 9mm. You can check this by removing your internal HDD and checking how thick it is.

My mid-2010 Mac Mini needs 9mm thick SSDs/HDDs. When I installed my Crucial M500 on it, which is 7.5mm, I also used an included plastic spacer which allowed the SSD to fit properly without looseness.

However, I think you're asking about those big brackets used to adapt SSDs on desktop towers. In this case, you don't need it -- and they won't even fit on a Macbook. In the worst case, you'll perhaps need a cheap $1 spacer (I'm not sure if Macbook needs 9mm-thick HDDs).
 
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