Lenovo IdeaCentre K330B Performance Desktop PC 77471TU - Intel Pentium Dual-Core G620 2.6GHz, 6GB DDR3, 1TB HDD, DVDRW, Keyboard Intel Pentium G620 2.6GHz Processor; runs most programs and applications 6GB 1333MHz DDR3 Memory; delivers faster, smoother multitasking 1TB 7,200RPM SATA Hard Disk Drive; stores up to 1TB of data DVDRW Dual Layer optical drive; reads and writes data on DVDs RJ-45 Interface; connects the PC to a network device Genuine Windows 7 Home Premium 64-bit Lenovo Enhanced Experience 2.0 for Windows 7 Intel HD Graphics 2000 2 USB 3.0 & 6 USB 2.0 connectors, eSATA 16-in-1 card reader for easy access HD graphics support Support for 7.1 channel digital surround sound Power Control Switch with halo lighting effect - choose between performance, dynamic and silent running modes Convenient top-mounted power button Lenovo Rescue System makes data backup and recovery simple so you can spend time on more enjoyable tasks Tool-free chassis design for easy upgrade and maintenance HDMI Out Port Mouse and Keyboard Included