I recently bought this as a replacement drive for the one in my 60GB PS3, which was filling up fast. The Scorpio, being a 2.5" laptop drive, is pretty small yet still looks impressively technical. Ok, so you're not going to see the thing when it's hidden away in the innards of your PC / PS3, but it does look like a quality piece of equipment. Mine didn't come with anything in the way of manuals or product literature, but anyone with minor computer knowledge (or access to the internet) should be able to fit it without any problems.
In order to replace the standard PS3 hard drive you first need to backup the information on it using the PS3's backup facility in `system settings' so, rather than letting the drive get too full with demo downloads and videos and having to endure a painfully long backup, I fitted the Scorpio while the stock drive still had quite a bit of space on it. Backing up my data still took around 20 minutes though, so if you intend to replace your PS3 drive, don't expect to do the whole thing in 5 minutes flat.
Fitting the drive into my PS3 was actually a pretty simple matter. Having backed up the existing drive, I switched the machine off and unplugged it, then prised open the drive slot on the bottom. I then undid the small blue screw that was holding the drive caddy in place, before sliding the caddy sideways to remove the drive from its ports - a small handle on the caddy makes this a lot easier. I then pulled the caddy out, which revealed the hard drive screwed into it with four (very delicate) screws. Undoing these (and stripping the head on one in the process - be warned, it is easy to do), I removed the drive from the caddy and fitted the Scorpio in its place, reversing the removal process to fit the new drive in place. The whole procedure is very easy to do but is also well documented on several websites if you'd prefer the added confidence of reviewing the instructions with photos before you started.
Once the Scorpio was fitted, I turned on the PS3 and formatted the new drive for use. I was a little disappointed to see that, after formatting but before adding my backed-up data, I was left with around 263GB of free space on the drive, as 35GB was being used as system space by the PS3. This left a 22GB discrepancy between the quoted size of the drive (320GB) and the actual size (298GB) although a quick search on the net revealed that, as computers don't count in decimal as we do, what to me was a 320GB drive was actually a 298GB drive to my PS3. It's a little disappointing that a product can be sold with a description that might technically be true but which doesn't really give you what you thought you'd be getting, nevertheless 263GB is still a lot of space and I certainly don't anticipate being able to fill it for some time.
On a final, positive note, the drive runs whisper-quiet and seems to have a transfer speed similar to that of the one originally fitted. I can't yet comment on its durability or its long-term reliability but as Western Digital is a quality brand I'm hoping for a lot of trouble-free use out of it. All in all, if you can put up with the discrepancy over the storage space (which I admit is probably the case with any hard drive), this is a worthwhile purchase and has been a very useful upgrade to my PS3.