OS: Windows 7 Home Premium (64-bit) Memory: 4GB (2/2) DDR3 SDRAM Storage: 500GB SATA hard drive, 5400RPM; integrated Super-Multi drive; 2-in-1 card reader TFT Display: Acer CineCrystal 15.6" (1366 x 768) Graphics: Integrated Intel HD Graphics Communications: 802.11b/g/n WLAN, 10/100 LAN, webcam - Mobile Intel HM65 Express chipset - Upgradeable up to 8GB (one 4GB memory card in each slot) - 2-in-1 card reader supports optional MultiMediaCard or SD (Secure Digital) card - Interface ports: DC-in, RJ-45 LAN, VGA, headphone/speaker/line-out, microphone, HDMI with HDCP, three USB 2.0 - 15.0" (381.0mm) x 10.0" (253.0mm) x 1.2" ? 1.4? (29.6mm ? 34.7mm) / 5.3 lb. (2.4kg) - Six-cell lithium-ion battery - 72 units per pallet - Mesh-gray chassis - One-year limited warranty