Lenovo 15.5 Inch Business Laptop B50 with Windows 7 Professional (Windows 8.1 Professional License), AMD E1-6010 Dual-Core Processor, 4GB Memory, 320GB HDD 4GB DDR3 RAM , 320GB hard drive 802.11 b/g/n/ac WiFi connectivity and Bluetooth 4.0, Dolby Advanced AudioTM No CD/DVD Drive