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. Choose from three different form factors (sizes) to suit your needs. Specifications: Processor: 933MHz Pentium III System memory: 256MB Hard drive: 20GB Optical drive: CD-ROM Floppy drive: 1.44MB Network: 10/100 Operating system: Windows XP Home Accessories: keyboard, mouse Monitor not included. Available in three sizes: Desktop: 15 in. W x 4.25 in. H x 16 in. D Mid-size Tower: 7 in. W x 16.5 in. H x 17.5 in. D Small Form Factor: 12.25 in. W x 4 in. H x 13.25 in. D This high-quality item has been factory reconditioned. Please click on the icon above for more information on quality factory-reconditioned merchandise.