Cisco CQ211L01-48H8FH Hardware Installation Manual page 40

Connect Router to the Network
• Fiber-optic end-face cleaning tools and inspection equipment.
Installing the Transceiver Module
Warning
Caution
Caution
Hardware Installation Guide for Cisco CQ211L01 Switch
34
Statement 1079—Hot Surface
This icon is a hot surface warning. Use precaution when working near the hot surface.
The transceiver module is a static-sensitive device. Always use an ESD wrist strap or similar individual
grounding device when handling transceiver modules or coming into contact with system modules.
Protect the transceiver ports by inserting clean dust caps (8000-QSFP-DCAP) into any ports not in use and
do not have optical modules plugged in. If optical modules are plugged in but not in use, the dust caps that
were supplied with the optical modules, should be used to protect the TX and RX surfaces of the optical
module.
Be sure to clean the optic surfaces of the fiber cables before you plug them back into the optical ports of
another module.
The router ships with dust caps plugged in. We highly recommend you to keep the dust caps plugged in until
you are ready to plug an optic.
The dust caps protect the ports from possible EMI interference and also avoid contamination due to dust
collection. To meet the EMI interference requirements, you must use the metal dust caps when the ports are
not in use by optical modules.
Installing the Transceiver Module