HP Compaq dx2400 MT EU PC, Windows Vista Custom Downgrade to XP Pro, Pentium Dual-Core E2200 Processor, 2GB PC2-6400 (DDR2-800) Memory, 160GB SATA NCQ HDD SMART IV 1st Drive, HP PS/2 Standard Keyboard, HP PS/2 2-Button Optical Scroll Mouse, SATA 16X SuperMulti LightScrbe 1st Drive, HP 16-in-1 3.5 Media Card Reader, 2007 Microsoft Office Ready PC, 3-3-0 MT Warranty