Lenovo M600 Fanless Tiny Mini PC N3000 2GHz 2/4GB RAM 16/240GB SSD Warranty
This is very low power consuming, fanless and silent, making this suitable for always-on applications like a web/file server, IOT appliance, robotics, display advertising etc. It has USB 3.0 ports suitable to plug in a USB 3.0 HDD for fast I/O.