The business aspect of the Buffalo Terastation 5200 can be seen on its exterior. On the front there is a little door that can be locked with a key, behind which two sturdy trays carry the hard disks. There is a display on the front, which tells you the status of the NAS at a glance. It's handy if you need to find out what the IP is, or whether the NAS is on. A bit of a strange feature on the front also is the VGA connector. Granted, connect a monitor to it and you can see what the OS of the NAS is doing, but it's not very interesting. A USB port for connecting an external hard drive would have made more sense. A likely explanation for this is that it was put there for its sibling the TeraStation WSS, which is equipped with Windows Storage Server 2008 R2 Workgroup Edition.
On the back there are four USB port, two of which are USB 3.0. This is practical for when you want to transfer large amounts of data. Buffalo also added two gigabit network connectors. Contrary to many other NAS devices this one has an integrated power supply.
The TeraStation 5200 uses an Intel Atom D2700 processor, a dual-core chip running at 2.13 GHz. It has 2 GB DDR3 memory on a SODIMM module on the motherboard, so this you could upgrade. The power consumption of 24 watts when idle (with spinning disks) and 26 watts when in use is reasonable, but not extremely efficient.