... /250G HD / Intel G31 mainboard/(sound driver/display card driver /10-100M netcard driver)Multi-media system:amplifier ... ; stereo Loudspeaker; magnetic-proof,net card, sound card,integrated display card, Operation system: Windows2000/XP/Vista/Win7, RedHatLinux ... accessories: *Barcode reader, Non-contact IC/ID card reader,Credit card reader.*Coin/Bill acceptor.*16bit/64bits Metal Keyboard, ...