... Ram, cooling fans, video card,10/100m net card, power supply, RJ45 interface,USB&RS232 port. Multi-media system:amplifier; stereo ... time: less than 16 ms. Touch activation force: 10 to 100g 4.Enclosure: Durable steel enclosure (different colors for optional ... acid,anti-dust 5.Optional accessories: 1.Bluetooth connection . 2.Printer:Epson 80MM thermal printer with auto cutter or HP A4 size laser ...