12.1-inch WXGA screen Aspect ratio: 16:10 Resolution: 1,366 x 768 pixels CPU: Intel Atom N270 1.6GHz Chipset: Mobile Intel Calistoga-GME i945GME and Intel 82801GBM ICH7-M L2 cache: 512K FSB: 533MHz Memory: 1GB RAM DDRII (maximum 2GB) HDD: 160 to 320GB SATA supports Graphics card: Intel GMA950 WLAN: Wi-Fi (IEEE 802.11b/g) built-in, 54Mbps LAN: Ethernet 10/100 base OS: pre-installed DOS, Microsoft Windows XP, Vista/7 and Linux Case material: piano black finish Interface I/O: 2 x USB port, 2 x PCI ExpressCard/34mm, 1 x SD/MS/MMC port, 1 x VGA port, 1 x RJ45 connector for Ethernet, 1 x audio out and microphone in port, RJ45 ODD: slim type DVD RAM Audio: built-in high definition audio, 2 x 1W stereo speaker Camera: 1.3MP Keyboard: 83 keys, full size Mouse control: touchpad; 3G module: built-in (optional) Bluetooth: built-in (optional) 6 cells Lithium battery (4,400mAh) Colors: black, white, Golden.