• Operating system: Microsoft Windows 10 Professional (64-bit)
• Processor: Intel Quad Core i7-2600 3.4Ghz (Max Turbo Frequency 3.8Ghz) 
• Memory: 4GB DDR3 Memory
• Hard drive: 500GB
• Optical drive: DVD-ROM
• Graphics: Integrated Intel HD Graphics
• Audio: Integrated High Definition Audio
• Networking: Integrated 10/100/1000 Ethernet
• Bays: 1 external 5.25-inch, 1 internal 3.5-inch
• Slots: 1 PCI (half-height), 1 PCIe x1 (half-height), 1 PCIe x16 (half-height, wired x4), 1 PCIe x16
• Ports: 10 USB 2.0, serial port, RJ-45, VGA, DisplayPort, 2 PS/2, 2 stereo/mic line-in, 2 headphone/speaker line-out
• Power Supply: 250W
• Model: OptiPlex 990 DT
• Package contents: Computer system, Power cord, Generic USB Keyboard and Mouse
• Dimensions: 14.2 inches high x 4 inches wide x 16.1 inches deep
• Weight: 16.67 pounds

• This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
• Intel Quad Core i7-2600 3.4Ghz (Max Turbo Frequency 3.8Ghz) CPU
• 4GB DDR3 RAM, 500GB HDD, Integrated Intel HD Graphics, DVD,10/100/1000 Ethernet
• 10 USB 2.0, serial port, RJ-45, VGA, DisplayPort, 2 PS/2, 2 stereo/mic line-in, 2 headphone/speaker line-out
• Windows 10 Professional

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.comDell Computers