... frame resistive/IR/SAW touch screen monitor 2,USB interface for touch,VGA input 3,Metal case Main feature: 12.1 ... (RS232 optional)OS Support: Windows (2000, CE, XP,Vista), UNIX, Linux, Mac OS XPower Consumption: <10 W TypOperating Voltage: DC11.5V ... : -20°C- +60°CColor: black, silverMore pictures for your reference:Back side Information checking for Hotel12" open frame metal case touch screen ...