Dell OptiPlex 990 DT/Core i7-2600 Quad @ 3.40 GHz/DVI Graphics Card/ 16GB DDR3 / 500GB HDD/DVD-RW/WINDOWS 7 PRO 64 BIT

Model: Dell OptiPlex 990 DT - Desktop
Operating System Info: Windows 7 Professional 64bit
Chipset: Intel Q67 Express Chipset
Processor: Core i7-2600 @ 3.4 GHz
Memory Installed: 16 GB DDR3
Memory Supported: Up to four DIMM slots; Non-ECC dual-channel 1333MHz DDR3 SDRAM; up to 16GB
Hard Drive: 500GB
Optical Drive: DVD-RW
Graphics: Integrated Intel HD Graphics 2000
Audio: Realtek ALC269Q High Definition Audio
Networking: Integrated Intel 82579LM Ethernet LAN 10/100/1000

Chasis:
Number of Bays: 1 internal 3.5 in; 1 external 5.25 in
Expansion Slots: 1 half height PCIe x16; 1 half height PCIe x16 (wired x 4); 1 half height PCIe x1; 1 half height PCI
Ports: 10 External USB 2.0 ports and 1 Internal USB 2.0 (MT & DT only); 1 Serial; 1 RJ-45; 1 VGA; 1 DisplayPort; 2 PS/2; 2 Line-in (stereo/microphone); 2 Line-out (headphone/speaker)
Power Supply Unit: Standard 250W PSU
Dimensions: 4.00" high x 14.20" wide x 16.10" deep
System Weight: 16.70 lbs
Warranty: 365 days