The Dell OptiPlex 390 SFF desktop PC delivers powerhouse computing thats ideal for everyone. The Dell OptiPlex 390 comes with a Intel(R) Core(TM) i3-2100 3.1GHz processor, and the Genuine Windows 7 Professional 64 Bit Operating System Only. This desktop computer also includes 8192mb of DDR3 memory, a 1 Terabyte Serial ATA hard drive, DVD ROM optical drive and standard keyboard / mouse. This desktop comes fully loaded with Microsoft Windows 7 Professional 64 Bit! This package will arrive with a restore partition and has been recently restored with Windows so you will be the first to use it. The restore partition will allow you to restore your computer back to the original state of purchase at any time and prevent expensive trips to the computer repair shop. Features: Form Factor- SFF Processor– Intel(R) Core(TM) i3-2100 3.1GHz, 6M Cache Memory- 8GB DDR3 Hard Drive-1 Terabyte Serial ATA Hardware Included– Standard USB Keyboard and Mouse Networking- 10/100/1000 internal network card Operating System- Genuine Windows 7 Professional 64 Bit Optical Drive- DVD ROM Software Installed- Windows 7 Professional 64 Bit and a Recovery partition included for easy reinstallation of operating system Users Guide / Manual- Downloadable From Manufactures Website Ports- I/O Ports: (1) HDMI (1) VGA (8) USB 2.0 - 2 Front, 6 Rear (1) Internal USB 2.0 (1) RJ-45 LAN (1) Headphone (1) Microphone (1) Audio: Line-in (1) Audio: Line-out Expansion Slots & Bays: (1) Half-Height PCIe x16 Slot (1) Half-Height PCIe x1 Slot (1) Slimline 5.25" External Drive Bay (1) 3.5" Internal Drive Bay Weight 12.57lbs