... 2.Hard Drive Capacity:320GB 3.Display Type:LCD 4.Keyboard and mouse:wireless Optional HDD:160GB-1TB; RAM:1GB,2GB,4GB;[ A ... Model(2GB, 320GB) ] [ E Model(1GB, 160GB) ];Wireless Mouse&Keyboard, WIFI, Webcam, Bluetooth, DVD-RW, Touch Screen, Wall-Mounted, etc ... HD audio 6(Realtek ALC662) audio systemNetwork: :Built in networkKeyboard and mouse: WirelessSpeaker: 4*10WPC I/O Connectors4 * USB 2.0, ...