ZOTAC Intel Core i3-3227U 1.9GHz/ Intel NM77/ 4GB DDR3/ 500GB HDD/Wi-Fi/A&V&2GbE/ Mini PC Barebone System ZBOX-ID45-PLUS-U No Operating System Processor: Intel Core i3-3227U Processor (1.9GHz, Dual-Core) Memory: 4GB DDR3-1600 SODIMM Memory, Max Capacity of 16GB Hard Drive: 500GB 5400RPM Hard Drive SATA: 1x SATA3 Port, 1x mSATA2 Port Ports: 4x USB 3.0 Ports (2 rear, 1 front, 1 top ), 1x DVI Port, 1x HDMI Port, 2x Wi-Fi Antenna Connectors, 2x RJ45 LAN Ports, 1x Optical S/PDIF Out, 1x Analogue Output, 1x Microphone Jack LAN: Integrated Gigabit Ethernet Controller; 802.11ac Wireless LAN; Bluetooth 4.0