Yes it is a sata drive. It is a internal hard.
I opened the 500gb external and found a Seagate Barracuda drive to my surprise.
As of Sept.2009 the Barracuda® XT from the Seagate Technology is the world's fastest desktop hard drive.
Barracuda hard disks are internal. Size of it is 3.5''.
The Barracuda 7200 by Seagate is currently the worlds largest hardrive.
Seagate have best quality products. New hard disk contains a software.
Sea Tools by Seagate
Sea tools by seagate
Mnay companies sells hard drive but Seagate Barracuda is recognized as one of the best. It is pricey at $227 but it gives 120 GB of space, has enhanced g force protection and has seashell packaging.
This is irrelevant. The Seagate ST3004.... is a hard drive, not a computer.
There are many hard drive manufacturers. Seagate is a best solution.
How to set security password for seagate expansion harddrive
Seagate is a top branded name. It is better than toshiba.