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Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01
Chapter 2 Preparing for Router Installation
Power Guidelines and Requirements
Power Guidelines and Requirements
Check the power at your site to ensure that you are receiving “clean” power (free of spikes and noise).
Install a power conditioner if necessary.
The AC power supply includes the following features:
• Autoselects either 110 V or 220 V operation.
• All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power inlet indicates
the correct voltage, frequency [AC-powered systems only], current draw, and power dissipation for
the unit.)
Table 2-3 lists power requirements for the Cisco ISR 4451-Xs.
Network Cabling Specifications
The following sections describe the cables needed to install your Cisco ISR 4451-X in the following
sections:
• Console and Auxiliary Port Considerations, page 2-12
• Preparing for Network Connections, page 2-14
Table 2-3 Power Requirements for Cisco ISR 4451-Xs
Router Power Source Input Power Input Voltage
Tolerance Limits
Cisco ISR 4451-X AC 100 — 240 VAC, 3.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco ISR 4451-X with
PoE
AC 100 — 240 VAC, 8.0 A, 50 — 60 Hz 90 — 264 VAC