... time (based on Bellcore Issue 6 TR-332,Case 2,Part 1 calcualted,,workingenvironment 40 degree celsiusRelative Humidity 10%~90 ... C~60°C (32°F~140°F)Internal HW Small design no moving parts, no fans,no local hard driveKit: ... to extend signalUSB Support all USB equipmentOthers Support touchscreen, wireless keyboard and mouseSuitable placeTeaching,hospitals,office,call centers,libraries,cafes,hotels ...