Buy it with confidence... You can see it run Perfectly, before you buy it This is a great running desktop computer and has been totally gone through ,  cleaned, harddrive reformatted and a fresh install of windows 10 pro 64 bit .  updated and activated. Specs: power supply : 264 watt total cpu : intel core 2 dueo E8400 3.0 ghz dual core Graphics : intel Q45 / Q43 express graphics with 1647mb memory Ram : 4gb total memory Harddrive : 250 gb sata 7200 rpm  Lan : gigabyte Wifi : a usb adapter 2.4ghz single channel on the 802.11n network is included if you need dual channel wifi,  upgrade to dual channel usb adapter on 2.4 and 5ghz network for 20 dollars more. if you need Bluetooth. I can add for 10 dollars more. front audio and 2 usb ports rear has 6 usb ports optical : sata dvd rw drive OS : new istall of windows 10 pro 64 bit. activated and updated. Software: Office 2007 , Microsoft pinball, Aquarium Screensaver + more this listing is for the tower only. No keyboard, mouse, power cord, speakers, or monitor. if you need any of these items, ask about availability and price, If I have , very reasonable. Check my other listings for more great deals. I have more available laptop and desktop tower computers. Thank you for looking, Rob