Processor: Dual Core processor (2.40 Ghz,1MB L2 cache,800 Mhz FSB) Memory : 1 GB DDR2 533/667 MHz HDD: 160GB SATA HDD Optical Drive : DVD Recordable Graphics :Intel Graphics Media Accelerator (GMA) 3100 Audio : High-definition audio with 7.1-channel support (ALC888S chipset) Bays : External: 1 x 5.25", 1 x 3.5"(media card reader installed), Internal: 1 x 3.5"(hard drive installed) Slots :1 x PCI Express X1 slot , 1 x PCI Express X16 slot, 1 x PCI 2.2(5 V) Network : Gigabit Ethernet (Realtek RTL8111B chipset) Ports : 6x USB 2.0(4 rear, 2 front), 1x PS/2 Keyboard & Mouse ports,Ethernet(RJ-45),Parallel port, Serial, VGA, Firewire(1 front, 1 rear), 7.1-channel Audio jack, Front headphone & Microphone jacks Operating System : Windows Vista Business Other Features: Acer eLock Management, Lock Pad, Integrated Media Card Reader and Front Firewire