On the outside, the Buffalo 5400WSS looks like any other Buffalo 4-bay NAS. It has the same black shell, the same display, and the same locking door.
Up front, the blue back-lit display can inform you of IP address for either NIC, Drive Usage, and Date & Time. To the left of the display is a very large Power Button and to the right is a Display Button. The display button can switch between the different displays mentioned and holding it will stop it from beeping if it decides to go hay-wire.
Just below is a locking front door that hides and protects the four populated drive trays. The door must remain locked to remove the keys and has a decent dust guard installed. Each of the drive trays is numbered, our 4TB 5400WSS is populated with four Seagate Barracuda 1TB drives (ST1000DM003). The drive trays are simple and effective. Next to each drive is a Status LED (Green for good and activity, Red for dead). Additionally, there is a VGA port. Connecting a monitor directly to the TeraStation is only supported for monitoring the progress of Windows Update.
Around back is your power, an 80mm cooling fan, a switch for Boot (USB and HDD – used for recovery only), D-sub 9 pin port for UPS, two USB 3.0, two USB 2.0. and two 10/100/1000 Ethernet Ports.