3Com 3CR17561-91-US Getting Started Guide - Page 94
The installation of the Redundant Power Supply RPS should, Fiber Optic ports - Optical Safety - jack
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94 APPENDIX A: SAFETY INFORMATION WARNING: U.K. only: If connecting a modem to the console port of the Switch 4500, only use a modem which is suitable for connection to the telecommunications system. WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. Only connect RJ-45 data connectors, network telephony systems, or network telephones to these sockets. Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets. WARNING: Fiber Optic ports - Optical Safety Class 1 LASER PRODUCT Never look at the transmit laser while it is powered on. Never look directly at the fiber TX port and fiber cable ends when they are powered on. WARNING: This device has more than one power input. Disconnect all power inputs to power off this device. WARNING: The installation of the Redundant Power Supply (RPS) should only be carried out by properly trained and qualified personnel. WARNING: These instructions must be read in conjunction with the RPS flyer and the safety and installation instructions supplied with your RPS. WARNING: When powering any Switch 4500 from an RPS, the unit must be earthed (grounded). This can be achieved by either connecting the power cord to the unit or by connecting the earth terminal on the rear of the unit to a reliable electrical earth, or by connecting both. It must be ensured that the earth connection is made before connecting the DC supply from the RPS. WARNING: Any RPS must be approved as an SELV output in accordance with IEC 60950-1/UL 60950-1/EN 60950-1.