Model: GA-970A-D3 Chipset: AMD 970 CPU socket: Socket AM3 plus Compatibility: FX, Phenom II, Athlon II, Sempron (Zambezi, Thuban, Deneb, Heka, Callisto, Propus, Rana, Regor, Sargas). Memory Type: DDR3 Number of DDR3: 4 Bus Speed : 4000 ~ 5200 MHz Sound: 8 - channel HDA codec Realtek ALC889 Networking: Realtek RTL8111E 10/100/1000 Mbit/sec Number of PCI: 2 Number of PCI-Express x1: 3 Number of PCI-Express x16: 2 Serial ATA 6Gb/s: 6 Ports: 1x PS/2 keyboard / mouse, 2x USB 3.0, 8x USB 2.0, 1x RJ-45 LAN, 1x optical S/PDIF-out, Line-in, Mic-in, Front-out, rear-out, sub/center-out, Surround-out. Form Factor: ATX, (305 x 224 mm)