1) 14.1 Inch, Windows7 2) Standard : Ram 1G, HHD 160GB Optional: 2G-4GB, ... HHD: 250GB/320GB/500GB 3) CPU intel Atom D2500 1) 14.1 Inch, Windows72) Standard : Ram 1G, HHD 160GB Optional: 2G-4GB ... )I/O Ports1xHeadphone jack , 1xMicrophone jack, 1xRJ-45, 2xUSB 2.0 Ports(only N142 has 3xUSB ports), 1xDC-in,1xInternal Microphone ...