Juniper EX4200 - Locating the Serial Number on an EX4200 Switch or Component; Locating the Chassis Serial Number ID Label on an EX4200 Switch

WARNING: Do not look directly into a fiber-optic transceiver or into the
ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables
connected to transceivers emit laser light that can damage your eyes.
WARNING: Do not leave a fiber-optic transceiver uncovered except when
inserting or removing a cable. The rubber safety cap keeps the port clean
and prevents accidental exposure to laser light.
CAUTION: Do not bend fiber-optic cables beyond their minimum bend
radius.An arcsmallerthan a few inches in diameter candamage the cables
and cause problems that are difficult to diagnose.
3. Remove the cable connected to the transceiver (see “Disconnecting a Fiber-Optic
Cable froma Switch” on page228). Cover the transceiver and the end of each fiber-optic
cable connector with a rubber safety cap immediately after disconnecting the
fiber-optic cables.
Copyright © 2015, Juniper Networks, Inc.224
EX4200 Switch Hardware Guide