Meet the ZOTAC ZBOX CI521: a compact mini computer with a quiet, fanless design that you can mount to the back of your monitor easily. It has an Intel Core M processor, 8 GB of RAM, and dual storage support with M.2 and 2.5″ HDD/SSD slot. The machine also has a fast 802.11ac WiFi antenna.
The above video shows what this mini PC has to offer. More information is available here.