2-3z It is recommended to have four people work together to move the device, thus avoiding incline ofthe chassis.z You can only hold the handles at both sides of the chassis when moving the switch, but not theplastic panel of the chassis, the handle of the fan tray, the handle of the PSUs, the handle of theback cover of the chassis, or the air vents of chassis. Any attempt to carry the switch with theseparts may cause equipment damage or even bodily injury.Laser SafetyThe S12500 series are class 1 laser products.When an optional optical interface board is operating, do not stare into the open optical port becausethe laser emitted from it has very high power density and is harmful to your eyes.The laser inside the optical fibre may hurt your eyes.Examining Installation SiteThe S12500 series can only be used indoors. To ensure that the switch works normally and to prolongits service lifetime, the following requirements should be met in terms of installation environment.Weight Bearing RequirementsBecause the S12500 series are very heavy, make sure the ground satisfies the following weight bearingrequirements:When installing an S12500 in an N68 cabinet that is 1.8 meters (5.91 ft.) tall,z For an S12508: the minimum bearing capacity is 668.75 kg/m 2 (137.02 pounds per square foot).z For an S12518: the minimum bearing capacity is 981.25 kg/m 2 (201.05 pounds per square foot).When installing an S12500 in an N68 cabinet that is 2.2 meters (7.22 ft.) tall,z For an S12508: the minimum bearing capacity is 743.75 kg/m 2 (152.38 pounds per square foot).z For an S12518: the minimum bearing capacity is 981.25 kg/m 2 (216.41 pounds per square foot).It is recommended to use a 2.2-meter-tall N68 cabinet for installation.