Allied Telesis x510 Series - Manual (Page 58)

Chapter 3: Beginning the Installation
58
Reviewing Safety Precautions
Please review the following safety precautions before beginning the
installation procedure.
Note
Safety statements that have the  symbol are translated into
multiple languages in the Translated Safety Statements document at
www.alliedtelesis.com/support.
Warning
Class 1 Laser product.  L1
Warning
Do not stare into the laser beam.  L2
Warning
Do not look directly at the fiber optic cable ends or inspect the cable
ends with an optical lens.  L6
Warning
To prevent electric shock, do not remove the cover. No user-
serviceable parts inside. This unit contains hazardous voltages and
should only be opened by a trained and qualified technician. To
avoid the possibility of electric shock, disconnect electric power to
the product before connecting or disconnecting the LAN cables. 
E1
Warning
Do not work on equipment or cables during periods of lightning
activity.  E2
Warning
Power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord.  E3