Cisco Cisco ME 3400EG-2CS-A Switch Release Notes

For information about ME 3400 support for ingress QoS classification on QinQ-based ports, see the 
Configuring ME 3400E QoS Classification for QinQ-Based Service, Release 12.2(53)SE document 
under the ME 3400E Configuration Guides link.

Cisco Ethernet Switches are equipped with cooling mechanisms, such as fans and blowers. However, 
these fans and blowers can draw dust and other particles, causing contaminant buildup inside the chassis, 
which can result in a system malfunction. 

You must install this equipment in an environment as free as possible from dust and foreign conductive 
material (such as metal flakes from construction activities).

Follow these standard for guidelines for acceptable working environments and acceptable levels of 
suspended particulate matter:

Network Equipment Building Systems (NEBS) GR-63-CORE

National Electrical Manufacturers Association (NEMA) Type 1

International Electrotechnical Commission (IEC) IP-20

These warnings were incorrectly documented in the guides. These are the correct warnings:

This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that 
the protective device is rated not greater than: 
10 A Statement 1005

To prevent the system from overheating, do not operate it in an area that exceeds the maximum 
recommended ambient temperature of:
140°F (60°C) Statement 1047

To prevent the system from overheating, do not operate it in an area that exceeds the maximum 
recommended ambient temperature of:
149°F (65°C) Statement 1047