The QNAP TS-509 Pro
QNAP wasn't aiming for aesthetic appeal when they designed the TS-509 Pro, but for a business product it didn't turn out too bad. The obvious features found on the front are the power and reset buttons, front USB port and indicator LEDs. At the top, covered by a smoke colored shield is a display system that allows basic functions and changes to the system. This can be useful in a pinch, but using a keyboard and mouse is a lot easier.
The outer casing is gray and can be removed to gain access to the system board and to upgrade the memory.
On the back we find the two gigabit Ethernet ports as well as four USB ports for attaching additional storage products or printers. The upper right connector is for eSATA, a great feature if you plan to only use the NAS with a single system. The two blocked off ports are VGA and RS-232. QNAP uses these for system checks and final checks before the products leave the factory.
The TS-509 Pro uses steel drive planes and as you can see here they are numbered. This caught me off guard at first as you rarely find sleds with labels preinstalled.