Welcome to the forums :emotion-5:

It's certainly easy enough to tell you what you need.  You need a 2.5" IDE (sometimes called PATA) external hard drive enclosure.

Advising you where to look is not so easy however, for a couple of reasons:

1.  You haven't mentioned where you're from?

2.  There are literally 100's of places selling external enclosure, and my suggested vendor(s) might not sit well with everyone else, even though I don't necessarily have a personal preference... other than than trying to find the cheapest source :emotion-2:

That said... if you're in the USA, there's little doubt that Newegg are the most popular store - by quite a ways.

If you're in the UK, all the popular online computer stores sell suitable external enclosures - i.e. Ebuyer, Scan Computers, Micro Direct, Aria, CCL Computers, Overclockers UK (/the shortened version will find them too - namely OcUK), Misco, Oyyy (yes... that's 3x Y's), Specialtech, Tekheads etc etc etc.

But Amazon UK would be a good choice IMO, because they not only sell quite a good range of enclosures themselves, but there are many nice/good/cheap enclosures sold in their Marketplace as well.

Just pick one which you like the look of, and which fits your budget, and you're set.

Just be sure to double-check that it's a 2.5" IDE enclosure (Amazon have mistakenly added 3.5" enclosures in their listings there :emotion-43:), and the overall cost (i.e. including delivery), before making a final decision on which one to order :emotion-5:

There's no point in buying the cheapest enclosure for instance, if their delivery charge would result in it costing you more overall than many others :emotion-55:

Finally... I personally prefer all my external enclosures to be supplied complete with an AC adapter, but those are usually slightly more expensive, and a power supply is not a necessity for a 2.5" hard drive enclosure - since they can draw enough power through a USB port.