Specifications
1-4
Cisco 7100 Series VPN Router Installation and Configuration Guide
78-6341-03
Chapter 1 Overview
Product Description
Figure 1-3 Cisco 7120 Series—Back View
Figure 1-4 Cisco 7140 Series—Back View
Cisco 7120 series routers have one power supply with one AC-input power receptacle; Cisco 7140 series
routers have two power supplies with two AC-input power receptacles for power load-sharing and
redundancy. A modular power cable connects each AC-input power supply to the site AC power source.
The router’s main power switch is located next to the AC-input power receptacles.
Cisco 7140 series routers will operate with power connected to either of the two power supplies. The
second AC-input power supply simply enables power load-sharing and redundancy. There is no primary
or secondary power supply for Cisco 7140 series routers.
We recommend powering the router from a 15A receptacle at the power source.
On the side of each chassis are two chassis ground receptacles that provide a chassis ground connection
for a two-hole grounding lug. On the back of the chassis, there is a receptacle for electrostatic discharge
(ESD) equipment. (See Figure 1-3 and Figure 1-4.)
Four internal fans draw cooling air into the chassis (back to front) and across internal components to
maintain an acceptable operating temperature. There are four environmental sensors for monitoring the
cooling air as it leaves the chassis. For more information on environmental monitoring, see the
“Environmental Monitoring and Reporting Functions” section on page 1-39.
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