2Important Safety InstructionsThis chapter contains important safety instructions for preventing bodily injury and/or propertydamage. You are required to follow them. Severity of bodily injury and/or property damage, which could result from incorrect use ofthe Switching Hub, are explained below. The following symbols are used to classify and describe the type of instructions to be observed.This symbol is used to alert usersto what they must not do. Do not use power supply other than AC 100 - 240V.Deviation could lead to fire, electric shock, and/or equipment failure. Do not handle the power cord with wet hand.Deviation could lead to electric shock and/or equipment failure. Do not handle this Switching Hub and connection cables during a thunderstorm.Deviation could lead to electric shock. Do not disassemble and/or modify this Switching Hub.Deviation could lead to fire, electric shock, and/or equipment failure. Do not damage the power cord. Do not bend too tightly, stretch, twist, bundle with othercord, pinch, put under a heavy object, and/or heat it.Damaged power cord could lead to fire, short, and/or electric shock. Do not put foreign objects (such as metal and combustible) into the opening (such astwisted pair port, console port, SFP extension slot), and/or do not drop them into theinside of the Switching Hub.Deviation could lead to fire, electric shock, and/or equipment failure. Do not connect equipments other than 10BASE-T/100BASE-TX/1000BASE-T totwisted pair port.Deviation could lead to fire, electric shock, and/or equipment failure. Do not place this Switching Hub in harsh environment (such as near water, high humid,and/or high dust).Deviation could lead to fire, electric shock, and/or equipment failure. Do not place this Switching Hub under direct sun light and/or high temperature.Deviation could lead to high internal temperature and fire.WARNINGThis symbol indicates safety instructions. Deviation fromthese instructions could lead to bodily injury and/orproperty damage.This symbol is used to alert usersto what they must do.WARNING This symbol indicates a potential hazard that could resultin serious injury or death.CAUTION