Acer Veriton M410-UF9650C AMD Phenom X4 9650 / 2.3 GHz ( Quad-Core ) Form Factor Micro tower RAM 3 GB (installed) / 8 GB (max) - DDR2 SDRAM 250 GB Hard Drive Serial ATA-300 DVD±RW Graphics Controller ATI Radeon X1200 Audio Output Sound card - 7.1 channel surround Network adapter - Ethernet, Fast Ethernet, Gigabit Ethernet OS Provided Microsoft Windows Vista Business / XP Professional 1 year manufacturer warranty