Dell's OptiPlex series combines power, functionality, versatility, and ease of maintenance all in one machine. Built with business in mind, yet well suited for the home user, the OptiPlex series is a computer that offers a perfect combination of reliability, power and affordability. Specifications: Processor: 1.7GHz Pentium 4 System memory: 256MB Hard drive: 20GB Optical drive: CD-ROM Graphics: onboard video Sound: onboard audio Network: onboard network Modem: not included External ports: two PCI slots, two PS/2 ports, four USB ports, two serial ports, one parallel port Operating system: Windows 2000 Pro Accessories: PS/2 keyboard and mouse Monitor not included. This high-quality item has been factory reconditioned. Please click on the icon above for more information on quality factory-reconditioned merchandise.