Having been spending the last few weeks trying to recover from an HD crash (a 4 year old IBM/Hitachi Deskstar, aka, Deathstar), I got this LaCie drive to do regular backups. The item was delivered promptly with the usual Amazon efficiency and the disk has performed well with USB2, and Firewire400 & 800 connections.
The drawbacks to this drive is that it has no heat dissipation to speak of (no vents, et c.) and gets quite hot with continual use. This does not bode well for its longevity, of which I am now acutely aware.
Also, unlike the cheap and ugly clear plastic (but vented) OWC 2.5" drive enclosure (I use one to house an old MacBook drive), it has no power switch. So after unmounting the volume, I have to physically disconnect the drive if I want to shut it down and to cool when not in use and save energy. I prefer to reduce wear & tear on my connection ports by reducing such actions. This would seem to be a simple and dumb feature to ad to this product, so get on it, LaCie.
I look forward to the superfast and durable SSD Solid State Drives decreasing in price and increasing the storage so I can do away with all the heat and moving parts of hard disk drives with (as yet) no appreciable technical downside.