Pentium 4 2.6Ghz processor.40 GB Maxtor Hard driveMicrosoft windows XP Professional w/ service pack 3, including genuine validation key!Microsoft Office 2003 ProfessionalCD burner, and DVD burner optical drives3.5 inch floppy disk drive for those old files you still have!4 USB 1.1 ports and 4 USB 2.0 ports onboard VGA port2GB ram, with heat spreaders.Ethernet 100 internet connection400Watt power supply with shutoff switch.also added two NEW intake fans in front panel for extra cooling, as well as a brand new high air flow CPU fan.Micro-star International (MSI) motherboard, model MS-6533 with latest updated BIOSlots of useful free software already included, as well as Avast Free anti-virus, and current microsoft updates.This computer is ready to go. I used it. my kids used it. It's fast, never overheats, Surfs the net and is fast and responsive. Tower only--no monitor or keyboard. call 334-0232 Location: bakersfield