MSI Computer Corp. Intel H61/A&V&GbE PC Barebone System HETIS H61 ULTRA Supports Intel Pentium/ Core i3/i5/i7 Processors, Chipset: Intel H61 Memory: 2x DDR3-1333 DIMM Slots, Max Capacity of 8GB SATA: 1x eSATA Port, Slots: 1x PCI-Express Port, 1x PCI Slot LAN: Integrated Gigabit Ethernet Controller Storage: 1x 3.5" SATA2 HDD, 1x 5.25'' Standard Super-Multi DVD Ports: 4x USB 2.0 Ports, 2x USB 3.0 Ports (front), 1x PS/2 Keyboard Port, 1x PS/2 Mouse Port, 1x eSATA Port, 1x DVI Port, 2x Serial Ports, 1x VGA Port, 1x HDMI Port, 1x RJ45 LAN Port, Audio I/O Jacks OS: Supports Windows 7 Home Premium / Professional 64-bit, Power Supply: 270W 80 Plus Power Supply