Dell OptiPlex systems combine 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. Look to Overstock.com for huge savings on high performance computers and accessories. Specifications: Processor: 1.0GHz Pentium III System memory: 256MB Hard drive: 20GB Optical drive: CD-RW 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, 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.