Lenovo IdeaCentre K300 53162HU Performance Desktop PC - Intel Pentium Dual-Core E5800 3.2GHz, 4GB DDR3 Memory, 1TB HDD, DVDRW, Mouse and Keyboard, Windows 7 Home Premium 64-bit Intel Pentium Dual-Core E5800 3.2 GHz Processor; runs most programs and applications 4GB 1333MHz DDR3 Memory; delivers faster, smoother multitasking 1TB (1024GB) 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. Microsoft Windows 7 Home Premium 64-bit operating system preinstalled Provides a stable computing platform. Lenovo Enhanced Experience 2.0 for Windows 7 Intel HD Graphics 6 USB 2.0 and 2 PS/2 connectors, 16-in-1 media reader Supports Memory Stick, Memory Stick PRO, Memory Stick Duo, Memory Stick PRO Duo, Secure Digital, miniSD, Secure Digital High Capacity, miniSDHC, xD-Picture Card, Microdrive and CompactFlash I/II formats. HD graphics support Support for 5.1 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 VGA Out Port Mouse and Keyboard Included Built-in 10/100/1000 Gigabit Ethernet LAN For quick and easy wired Web connection. Intel Pentium processor Features classic 2-way processing performance, letting you run multiple applications simultaneously, so you can browse, send instant messages, download music and transfer photos all at once.