The N4200 is an all black unit. The front of the unit has an OLED screen on top. Under the screen are the buttons, Up, Down, Enter and Escape are located here. Under the buttons are four drive bay doors. The left side of the unit starts off at the top with a Thecus logo. Under the logo is a LCD screen, two USB 2.0 ports and the Power button for the unit.
The top and sides of the unit have no ports of any kind as the cover comprises those three sides. The back of the unit has four USB 2.0 ports, bringing the total USB 2.0 ports on the N4200 to six. There are two external SATA connections on the back bringing the total SATA drive support to the six supported by the chipset. Curiously Thecus includes a PCIE slot with an opening in the back. There is a LAN and a WAN port rounding out the unit. There is a single expansion slot in the Thecus N4200 that I have yet to see discussed in a review, and this slot is a single PCIe 1X slot that can support many of the new discreet cards that are starting to show up on the market such as the USB3 3.0 and SATA 3 cards that I have seen already.