Cisco WS-C2950T-24 Installation

2-6
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
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 2-1 lists power requirements for the Cisco 2900 and 3900 series routers.
Ta b l e 2-1 Power Requirements for Cisco 2900 and 3900 Series Routers
Router Power Source Input Power Input Voltage
Tolerance Limits
Cisco 2901 AC 100 — 240 VAC, 2.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco 2901 with PoE
1
1. POE = power over Ethernet
AC 100 — 240 VAC, 5.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco 2911 AC 100 — 240 VAC, 2.0 A, 50 — 60 Hz 90 — 264 VAC
DC 24 — 60 VDC, 8 A, positive or negative 20 — 72 VDC
Cisco 2911 with PoE AC 100 — 240 VAC, 4.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco 2921 AC 100 — 240 VAC, 3.0 A, 50 — 60 Hz 90 — 264 VAC
DC 24 — 60 VDC, 12 A, positive or negative 20 — 72 VDC
Cisco 2921 with PoE AC 100 — 240 VAC, 8.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco 2951 AC 100 — 240 VAC, 3.0 A, 50 — 60 Hz 90 — 264 VAC
DC 24 — 60 VDC, 12 A, positive or negative 20 — 72 VDC
Cisco 2951 with PoE AC 100 — 240 VAC, 8.0 A, 50 — 60 Hz 90 — 264 VAC
Cisco 2911, 2921, and
2951
Backup power:
Cisco RPS-675 Redundant
Power System
100 VAC, 10 A, or 240 VAC, 6 A
Cisco 3925
Cisco 3925E
AC 100 — 240 VAC, 7.0 A - 3.0 A, 50 — 60
Hz
90 — 264 VAC
Cisco 3925 with PoE
Cisco 3925E with PoE
AC 100 — 240 VAC 90 — 264 VAC
Cisco 3925
Cisco 3925E
DC 24 — 60 VDC 18 — 75 VDC
Cisco 3945
Cisco 3945E
AC 100 — 240 VAC 90 — 264 VAC
Cisco 3945 with PoE
Cisco 3945E with PoE
AC 100 — 240 VAC 90 — 264 VAC
Cisco 3945
Cisco 3945E
DC 24 — 60 VDC 18 — 75 VDC

Cisco WS-C2950T-24 Specifications

General

Brand	Cisco
Model	WS-C2950T-24
Category	Switch
Language	English