Windows 7 Professional 32-Bit: HP DC5800 - Duo 3.0GHz, New 1TB HDD, 4GB RAM, Windows 7 Professional 32-Bit, WiFi (Certified Refurbished) 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. *NEW* 1TB Hard Drive with 2 Year Manufacturer Warranty! Model: HP DC5800 SFF Desktop. (1) low profile PCI slot, (2) low profile PCIe x1 slots, (1) low profile PCIe x16 (SDVO/ADD2), Front I/O: (2) USB 2.0, headphone and microphone. Rear I/O: (6) USB 2.0, (1) standard serial port. 240-watt power supply Optional: 85% efficient energy saving power supply. Software: Comes Pre-Installed with *NEW* Windows 7 Professional 32-Bit Operating System Whats in The Box? Refurbished DC5800 SFF Desktop PC with Power Cable, New ReCircuit USB Keyboard, Mouse & Mousepad!