Shuttle XPC Slim DS81 Mini Barebone PC Intel H81 LGA 1150 Haswell Heatpipe Cooling Module No CPU No Ram No HDD No OS Slim design and easy assembly Heat pipe cooling technology Support 4K ultra HD High speed transmission interface Great Connectivity Support Power On By Rtc Energy saving Dual-Screen Display Output Processor: LGA1150 Supports 4th Generation Intel Has well Core i3/ i5/ i7 Processors Chipset: Intel H81 Express Memory: 2x 204pin DDR3-1600 DIMM Slots, Dual Channel, Max Capacity of 16GB SATA: 1x SATA3 Port, 1x SATA2 Port Ports: 2x USB 3.0 Ports, 6x USB 2.0 Ports (2 rear, 4 via headers), 2x Display Ports, 1x HDMI Port, 2x Serial Ports, 2x RJ45 LAN Ports, 1x Microphone-In, 1x Audio-Out Form Factor: 1.3L Chassis No CPU, No Memory, No HDD, No ODD, No Operating System