Superb Hewlett Packard professional workstation computer. Comes with superb secification including: Intel Core 2 Duo Processor (1.8Ghz 2MB Cache) Massive 4 Gig RAM Memory Ultra fast 160GB SATA2 Hard drive CD DVD Conmbo Drive R/RW Specifications Model & OS Model HP xw4400 Bundled OS Microsoft Windows XP Pro Chassis Case Type : minitower Processor Processor Type Intel Processor Speed Core 2 Duo E4300 1.8 GHz Processor Cache 2 MB Processor Bus Speed 800 MHz Memory Memory Type DDR2 Memory Qty . 4 GB Graphics Adaptor PCI-Express NVIDIA NVS285 64mb Dual Head Graphics Monitor Supported QTY 2 Storage Hard Disk Capacity 160 GB Hard Disk Controller SATA Optical Storage DVD/CD-RW combo Display Monitor Not Included Slots / Bays PCI-Express 1 x PCIe (x16 graphics) 1 x PCIe x16 mechanically (x4 electrically) 1 x PCIe x1 Bays - 3.5 2 x internal 3.5-in Multibay 3 x externl 5.25-in Net/Communication Network Integrated Gigabit NIC Ports / Interfaces USB Ports (Rear) 5 USB 2.0 USB Ports (Front) 2 USB 2.0 Firewire (Front) 1 IEEE 1394 Serial Ports 1 serial Parallel Ports 1 parallel PS/2 Ports (Keyboard,Mouse) 2 PS/2 Audio Ports (Front) 1 x microphone in 1 x audio in / Out Audio Ports (Rear) 1 x microphone in 1 x audio in / Out RJ 45 1 RJ-45 Dimensions Height 44.9 cm (17.68 inches) Width 17.0 cm (6.69 inches) Depth 45.7 cm (17.99 inches) Weight 14.97 kg (33.00 lb)