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Does anyone know where Amethyst bought his drive caddy? I couldn't tell from the OP
Normally you get the SSD adapter when you order Apple's 512GB SSD drive as an option for your brand new Mac Pro. But you can also find it on eBay. This seller, for example, is selling the adapter only.
 
No. I have an intel 330 and the adapter centers the drive, so it won't fit when you put it on the sled. It might be possible to drill holes in it.

Just ordered Intel 520 240GB from Newegg (currently priced at $229, best I found) which includes 2.5 to 3.5 adapter. As a Mac Pro newbie, should that be all I need to install it? The Mac Pro will arrive today...
 
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