1-39
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
Chapter 1 Overview of the Routers
Specifications
With DC PS (w/o modules) NA
Weight (fully configured) 34 lb, 14.42 kg
Power
AC input power
• Input voltage 100 to 240 VAC, autoranging
• Frequency 47 to 63 Hz
• Input current 0.4 A to 3.3 A (configuration dependent)
• Input current with AC-POE 0.4 A to 7.6 A (configuration dependent)
• Surge current 60 A peak and less than 12 Arms per half cycle
Power consumption 75 W to 320 W, 256 to 1092 BTU/hr (configuration dependent)
• With AC-POE 80W to 750 W, 273 to 753 BTU/hr (configuration dependent)
Ports
Console ports One RJ-45 connector and one mini USB Type B, USB 2.0
compliant
Auxiliary port RJ-45 connector
USB ports Two USB Type A, USB 2.0 compliant, 2.5 W (500 mA) max.
1
10/100/1000 Gigabit Ethernet Three RJ-45 connectors (GE0/0, GE0/1, GE0/2), auto-MDIX
SFP One RJ-45 connector supports an SFP module. When an SFP
module is installed, the adjacent RJ-45 GE connector is disabled.
Environmental
Operating humidity 10 to 85% RH
Operating temperature up to 5906
ft (1800 m) elevation
32 to 104°F (0 to 40°C)
Operating temperature up to 9843
ft (3000 m) elevation
32 to 104°F (0 to 40°C)
Operating altitude 9842 ft (3000 m) maximum
Transportation and Storage
Nonoperating temperature -40 to 158°F (-40 to 70° C)
Nonoperating humidity 5 to 95% RH
Nonoperating altitude 15,000 ft (4570 m)
Acoustic
Acoustic: Sound Pressure
(Typical/Maximum)
54.4 to 67.4 dBA
Acoustic: Sound Power
(Typical/Maximum)
62.6 to 74.5 dBA
Regulatory
Table 1-16 Cisco 2921 Router Specifications (continued)
Description Specification
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