21.5? all-in-one touchscreen2nd generation Intel Core processorsLenovo Enhanced Experience 2.0 for Windows 7, with RapidBootUp to Genuine Windows 7 Home PremiumIntel Core i5 with Turbo Boost 2.0 ProcessorUp to 8GB DDR3 RAMUp to 2TB(7200rpm) HDDAMD Radeon HD6450(1GB), Intel HD Graphics 2000 Graphics CardWindows 7 Home OSIntegrated DVD reader/writer drive Optical Drive5-in-1 card readerIntegrated 5.0 speakers supporting SRS Premium Surround Sound audio enhancementWireless LAN Wi-Fi nGigabit LANBluetoothPorts: VGA, USB, microphone-in, headphone-output, HDMI, PS2, HWTV in, TV in, AV in, B-Case Card inDimensions: 534 x 394.5(405.2) x 75.3(118.5) mmWeight: 10 kg