Asus UltraBook Windows 7 K55A-RBR6 Intel Core i5-2450M 2.5GHz 6GB DDR3 750GB DVD+/-RW 15.6" LED Aluminum Construction 15.6" HD LED-backlit Display K55A-RBR6 Asus Intel Core i5-2450M Processor (2.5 GHz, 3MB L3 Cache) 6GB DDR3 SDRAM System Memory (expandable to 8GB)750GB SATA Hard Drive SuperMulti DVD Burner10/100/1000Mbps Ethernet 802.11b/g/n Wireless LAN0.3MP webcam with Built-in Microphone6-cell lithium-ion battery, up to 6 h 38 min battery life 5-in-1 Memory Card Reader2 x USB 3.0 ports, 1 x USB 2.0 port, 1 x headphone jack, 1 x microphone jack, 1 x RJ-45 Ethernet port, 1 x HDMI 1.4 port, 1 x D-sub 15-pin portGenuine Microsoft Windows 7 Home Premium 64-Bit Edition