WD Elements 500GB 2.5 Inch external, having a quick look around it should contain a WD Caviar Blue (5400RPM 8MB Cache 500GB) I Was like, That will do me its better than my SATA150 120GB one, So I Ordered it up and yesterday it came in the post
Now this may not go for them all out there but it seems these Scorpio Blacks are out there in the wild in some models of these externals instead of what should have been in it shown here: http://goo.gl/U4uIE
Could be a nice space and performance boost could be had on PS3 and 360 Consoles too as well as if your looking for a larger hdd for a laptop
The Model of WD Elements I bought that may contain these Scorpio Blacks is: WDBAAR5000ABKthe 4 letter code after only relates to the location (NESN = North America EESN = Europe ect ect) it is the USB 2.0 Version NOT the USB 3.0 (I Hear the USB 3.0 ones have the USB Connector intergreated onto the HDD Board like a complete unit)
Thought id share what I found and while dont hold me responsible if you end up with something else there must be more of this model out there with the good drives or maybe most of em? also this only relates to the 500GB Model, I Dont know if the 320GB or 750GB has the same, Although I'm sure you wont get a Scorpio Black outta a 1TB one as they dont do Scorpio Blacks in that size.
Take this for what you will and happy hunting!