1. Build Your Own Network Attached Storage (BYO-NAS) 2. Takes advantage of the natural heat conductivity and dissipation of the aluminum 3. Augmented the built-in controllable fan to cool down both the Raspberry Pi and hard disks 4. Multi-function power button to allow for seamless integration with the case. Programmable OLED Display is neatly situated under the button to display the following: (1) IP address (2) CPU status (3) Storage status 4-Bay SATA Hard Drive Ports that can fit two 3.5 inch SATA HDD and two 2.5 inch SATA HDD/SDD Real-time Clock is built-in to make scheduling tasks possible All ports are in one side for neat cable management micro-SD-comapatible cards can be ejected by pushing them on the same port Powered by 12V 5A Power Supply Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Material: aluminum colour: black Package Contents: 1 x Argon EON Pi NAS