1Preparing for installationH3C Mini Unmanaged Ethernet Switches include the followingmodels:• H3C Mini S8G-U (S8G-U).• H3C Mini S9-PWR (S9-PWR).• H3C Mini S16G-U (S16G-U).• H3C Mini S24-U (S24-U).• H3C Mini S24G-U (S24G-U).Safety recommendationsTo avoid any equipment damage or bodily injury, read the followingsafety recommendations before installation. The recommendationsdo not cover every possible hazardous condition.• Do not place the switch near water or in a damp environment.Prevent water or moisture from entering the chassis.• Place the switch in a clean environment. Dust buildup on thechassis might result in electrostatic adsorption, which reduceslifespan of the device and can cause communication failure.• Keep the air inlet and outlet vents of the switch free ofobstruction, and do not stack switches.• Make sure the operating voltage is in the required range.• Before using the switch, make sure the grounding cable of theswitch is correctly connected.• Before cleaning the switch, remove the power cord from theswitch. Do not clean the switch with a wet cloth or liquid.• Do not open the chassis while the switch is operating.