Fujitsu CG-641 Series Operation Manual page 3

Caution
Turn off the power before connecting any devices.
Failing to do so could result in electric shock or fire.
Make sure that connecting cables are inserted fully.
Failing to do so can result in fire.
Disconnect the power and cables before moving the device.
Failing to do so can result in injury and damage to the device.
Install connecting cables in an area where they won't be pulled
or be caught.
Failing to do so can result in injury.
En-2