HP Pavilion a1000n Desktop PC (Intel Celeron D Processor 340, 512 MB RAM, 80 GB Hard Drive, DVD/CD-RW Drive) (Discontinued by Manufacturer) 2.93 GHz Intel Celeron D processor with 533 MHz front-side bus, 256 KB L2 cache 80 GB hard drive, 512 MB RAM (2 GB maximum), DVD-ROM, CD-RW drives 5 USB 2.0, 2 Firewire (IEEE1394), 1 serial, 1 parallel, 1 VGA, headphone, microphone, multiformat memory card reader Built-in 10/100 Ethernet and 56K modem Windows XP Home Edition