Operating System: Windows 7, Microsoft Windows POSReady 2009, SUSE Linux Enterprise for Point of Service 11 (SLEPOS 11) Display: 15" IR Touchscreen Processors: Intel Celeron Dual Memory Support: Two (2) slots DDR2, Up to 4GB Hard Drive: SATA2 HDD/Optional SSD Expansion Slots: Express Card slot I/O Ports: VGA, USB 12volt, USB 24volt, Seven (7) USB 2.0, RS232(powered), RS232, RJ45, Two (2) PS/2, Audio I/O Communications: Gigabit Ethernet Power: 100W Dimensions: 38.2 x 35.9 x 25.3 cm Weight: 12.3 kg