This was in my old hard drive box, but I have no idea what it is... Googling the numbers on it says it's Seagate, but none of the pictures I've seen look anything like this!
This is the hard drive front:
And the back:
That's a Seagate 40 GB IDE hard drive (assuming that barcode number 100155904 is a part number):
From what I see, it is a hard drive (which is probably Seagate) which resides inside a custom case,
As for identification, either remove the case (if possible) to see the front of the disk or attach the disk to a computer and check the information the Device Manager gives you, throwing that information into Google would be more efficient than trying to figure out stickers on the back of your drive...
It's probably in that case so it can better fit and/or attach to your computer case; although the front of that case looks weird, kind of like a productian failure or perhaps they have wiped the identification?