good point!
There is a sticker on the drive that says," Clatter noise is normal if HDD is shaken."
That's part of the anti-shock mechanism, I assume.
I sold one of these on E-bay and the winner didn't 'get it' and claimed it was defective and REFUSED to even plug the unit in, fearing that it would damage her A1200!!!
It is normal, I assure you. All of the 2.5 inch IDE drives that I've gotten over the past FOUR YEARS have been like this.
AND I'm covering against arriving DOA, that should instil some confidence!!