When you buy a Buffalo MiniStation, it comes with an included limited warranty. You have to register your drive to receive support from Buffalo, as well as the warranty benefits. Buffalo requires the serial number from your MiniStation to complete the registration process. With many different numbers stamped in different areas of the drive, it can be confusing if you're unsure where to look.
Disconnect the Buffalo MiniStation. Unplug the power cord.
Turn the drive upside down to view the sticker stamped on the bottom of the drive.
Locate the 13-digit part number on the bottom of the drive. The serial number is the 13-digit code on the sticker.