Specifications o Mfr Part Number: H55M PRO o CPU: Socket 1156 Support Intel Core i7/ i5/ i3/ Pentium Processor; Supports Intel Turbo Boost Technology o Chipset: Intel H55 o Memory: 4x 240pin DDR3-2600+(OC)/2133(OC)/1866(OC)/1600/1333/1066 DIMMs, non-ECC, un-buffered, Dual Channel, Upto 16GB o Slots: 2x PCI-Express x16 2.0 Slots (Support ATI CrossFireX/ Quad CrossFireX Technology); 1x PCI-Express 2.0 x1 slot; 1x PCI Slots o IDE/SATA: 5x SATA2 Ports, 1x eSATA2 Port o Video: Intel HD graphics, w/ upto 1759MB shared memory o Audio: VIA VT1708S 7.1-Channel HD Audio CODEC o LAN: Realtek RTL8111DL PCI-Express Gigabit Ethernet Controller o Ports: 11x USB 2.0 Ports (5 rear, 6 by headers); 1x Powered eSATA2/USB Port; 2x IEEE 1394 Ports (1 rear, 1 by header); 1x HDMI Port; 1x DVI Port; 1x VGA Port; 1x PS/2 Ports; 1x RJ45 LAN Port; 1x Optical S/PDIF Out; Audio I/O Jacks o Power Connector: 1x 24pin Main Power, 1x 8pin CPU Power o Form Factor: Micro ATX, 9.6 x 9.6 inch / 24.4 x 24.4 cm o Package: Retail