Safety
Cisco 805 Router Hardware Installation Guide
2-2
Warning Before working on a system that has a standby/on switch, turn the
power to standby and unplug the power cord.
Warning Before wor king on equipment that is connected to power lines, remove
jewelry (including rings, necklaces, and watches). Metal objects will heat up when
connected to power and ground and can cause serious burns or weld the metal
object to the terminals.
Warning Ultim ate disposal of this product should be handled according to all
national laws and regulations.
Warning If t he symbol of suitability with an overlaid cross ( ) appears above a
port, you must not connect the port to a public network that follows the European
Union standards. Connecting the port to this type of public network can cause
severe injury or damage your router.
Warning To avoid electric shock, do not connect safety extra-low voltage
(SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain
SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports
both use RJ-45 connectors. Use caution when connecting cables.
Figure 2-1 shows the Cisco 805 router ports that include SELV circuits. For a definition of
SELV and TNV, see “Terms and Acronyms” in “About this Guide.”