Specifications o Mfr Part Number: GA-H55M-UD2H o CPU: Socket 1156 Support Intel Core i7/ i5/ i3 series processors o Chipset: Intel H55 Express Chipset o Memory: 4x 240pin DDR3-2200+/1800/1600/1333/1066/800 DIMMs, Non-ECC, Dual Channel, Capacity Upto 16GB o To reach DDR3 2200 MHz and above, you are required to use with Intel Core i7/Core i5 CPU without HD Graphics and install a discrete graphics card. When using Intel Core i5/Core i3/ Pentium CPU with HD Graphics, the maximum memory speed supported is 1666 MHz o Slots: 1x PCI-Express 2.0 x16 Slot; 1x PCI-Express x16 Slot(runs on x4 mode),Support for ATI CrossFireX technology; 2x PCI Slots o IDE/SATA: 1x ATA-133 Channel; 5x SATA2 Ports, 1x eSATA2 Port o Video: Integrated with graphics controller o Audio: Realtek ALC889 7.1-Channel High Definition Audio CODEC o LAN: Realtek RTL8111D Gigabit Ethernet Controller o Ports: 12x USB 2.0 Ports (6 rear, 6 by headers); 1x eSATA2 Port; 2x 1394 Ports(1 at rear, 1 by header); 1x PS/2 Ports; 1x optical S/PDIF-out Port; 1x DisplayPort; 1x HDMI Port; 1x DVI Port; 1x VGA Port; 1x RJ45 LAN Port; Audio I/O Jacks o Power Connector: 1x 24pin main power; 1x 4-pin ATX 12V power connector o Form Factor: Micro ATX, 24.4 x 23 cm o Package: Retail o RoHS Compliant