get a owc or macally enclosure both are good
Not to be too obvious, but since HDDs are 2.5" or 3.5" so you'll need to get the appropriately-sized enclosure. I have found that my OWC enclosure matches my Mac mini pretty well, and the fact that it is fanless does not make the enclosure hot when the 2.5" 5200RPM drive is plugged in via USB.Are all enclosures the same? Will any enclosure "fit" my hard drive?
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Are all enclosures the same? Will any enclosure "fit" my hard drive?
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True. Apologies.
OP - if it's 2005 iMac or later and the 250GB drive is the original then it *should* be a SATA. Post your model details and we can confirm.
If you need Firewire 400, 800 (or both), Other World Computing has their "Voyager" SATA dock with USB2, firewire 800 & 400, and (I believe) e-SATA as well. It costs more, though.