Specifications Condition: New Operating Systems: Microsoft¢ç Windows¢ç XP Professional Edition Genuine Windows¢ç Vista¢â Business Platform: PC Orientations Allowed: Vertical Horizontal Form Factor: Microtower Bays: 2 - 5.25" Drive Bays 1 - 3.5" Drive Bays Internal Bays: 2 - 3.5" Drive Bays Available 3.5" Drive Bays: 2 Available 5.25" Drive Bays: 1 PCI Slots (Total): 1 PCI Express X1 Slots (Total): 2 PCI Express X4 Slots (Total): NA PCI Express X8 Slots (Total): NA PCI Express X16 Slots (Total): 1 PCI Express Slots (Total): 3 PCI X Slots: NA AGP Slots (Total): NA CNR Slots (Total): NA Expansion Slots: 4 PS/2 Keyboard Connectors: 1 PS/2 Mouse Connectors: 1 Serial Communication Ports: 1 USB Ports: 8 FireWire Ports: NA eSATA Ports: NA LAN Ports: 1 Game/MIDI Ports: NA Audio Out Jacks: 2 Line In Jacks: 1 Microphone Jacks: 1 Composite Video: NA VGA Ports: 1 DVI Video: NA S-Video Connectors: NA Coaxial Connectors: NA S/PDIF Connectors: NA Processor Brand: Intel¢ç Processor Class: Core 2 Duo Processor Number: E4500 Processor Speed: 2.20GHz Processor Interface: Socket LGA775 Processors Supported: 1 Processors Onboard: 1 Additional Technologies: Intel¢ç Extended Memory 64 Technology Dual-Core Technology Memory Type: DDR2 Memory Size: 1GB Total Memory: 4.0GB Memory Speed: DDR2 800 (PC2-6400) Memory Slots (Total): 4 Memory Slots (Available): 0 Maximum Memory Supported: 4.0GB - 32bit / 8.0GB - 64 bit Interface: SATA II Capacity: 500GB Speed: 7,200RPM Optical Drive Type: DVD¡¾RW/RAM Dual Layer Lightscribe Interface: SATA Audio Description: Integrated Audio Audio Chipset: High Definition ADI 1884 Channels: 4 Graphics Description: Integrated Graphics GPU/VPU: Intel Graphics Media Accelerator 3000 Video Memory: up to 256MB Shared Memory Video Interface: VGA (15-Pin D-Sub) Maximum Resolution: 1920 x 1200 Communications Description: Integrated LAN Support Interface Type: RJ-45 - Ethernet Connector Chipset: Intel 82566DM Data Transfer Rate: 1000Mbps 10Mbps 100Mbps Power: 300 Watt Power Supply Type: 80 PLUS Active PFC Mouse Type: Optical Buttons: 3 Scrolling Capability: Vertical Connection Type: PS/2 Keyboard Type: Standard Connection Type: PS/2 Height: 14.85" Width: 6.95" Depth: 16.85"