DELL GX-755 SFF-WINDOWS 7 PROFESSIONAL 64 Bit- INTEL PROCESSOR CORE 2 QUAD 2.4GHz:4GB DDR2 MEMORY:1TB(1000GB) SATA HARDDRIVE:DVD DRIVE: USB WiFi Dell OptiPlex 755 Small Form Factor - Core 2 Quad 2.4GHz - 4GB RAM - Network Card: WiFi - Slots: (1) PCI, (1) PCIe x16 - Ports: 8 x USB 2.0 (2 front, 6 rear), 1 x Parallel, 1 x Serial, 1 x VGA, 1 x Ethernet (RJ-45), 2 x 3.5mm audio line-in, 2 x 3.5mm audio line-out - Power Supply: 275W Software: Comes Pre-Installed with Windows 7 Professional 64-Bit Operating System:Refurbished Dell OptiPlex 755 SFF with Power Cable, New USB Keyboard & Mouse!