The NETGEAR XAVB2001 is a nice looking product. It is more bulky than other Powerline adapters we have played with. However, looking at the design, it looks like the extra bulk comes from additional ventilation around the bottom of the device.
The front of the XAVB2001 has three LEDs. These indicate power to the device, a connection over internal powerlines and a full network connection indictor light.
The back has the typical two pronged power connectors (for the US) and some important information. There is a password needed to attach this to your network. You should copy both down making sure you associate them with the MAC addresses on each.
The bottom has a single RJ-45 port while the side has a reset button and an auto connection button. This button will seek out other adapters on the same Powerline network and setup the security between them automatically.