essentually...you can brain dump everything but size and connection. The rest is just info that isn't really relivent for what you're looking to do with this. If you were going to use it constantly...sure. But as a once a week backup, it really doesn't matter. Getting a good deal is as good as anything else.
Size= needs to be big enough to hold your backup
Connection= you need to physically be able to connect it to the computer [img]smile.gif[/img]
This is just an example of something that comes with everything you need all in one box:
Walmart Special
As said, when you're not backing up or restoring keep it in a safe dry place, away from any halogyn lights or speakers.