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Overtightening can cause a drop, short circuit or malfunction due to damage
to the screw or module.
z Completely turn off the externally supplied power used in the system before
mounting or removing the module.
Not doing so could result in damage to the product.
z Do not directly touch the module's conductive parts or electronic
components.
Touching the conductive parts could cause an operation failure or give
damage to the module.
z Completely turn off the externally supplied power used in the system when
installing or placing wiring. Failure to do so may cause malfunction or failure
of the module.