Intel Celeron 420 1.6 GHz Form Factor Micro tower Dimensions (WxDxH) 7.1 in x 14.7 in x 14.4 in Weight 22.5 lbs RAM 512 MB (installed) / 4 GB (max) - DDR2 SDRAM 80 GB Hard Drive Serial ATA-300 DVD-ROM Card Reader 16 in 1 Monitor None. Audio Output Sound card - stereo Network adapter - Ethernet, Fast Ethernet, Gigabit Ethernet Microsoft Windows Vista Home Basic Environmental Standards EPA Energy Star Manufacturer Warranty 1 year warranty ( on-site )