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Overview of Cisco 2800 Series Routers
OL-5783-01
Hardware Features
Figure 2 Front View of a Cisco 2811 Router
Figure 3 Front View of a Cisco 2821 or Cisco 2851 Router
This chapter describes the features and specifications of the routers and includes the following sections:
• Hardware Features, page 2
• Chassis Views, page 10
• Interface Numbering, page 16
• Specifications, page 18
• Regulatory Compliance, page 25
Hardware Features
This section describes the basic features of Cisco 2800 series routers, including product identification,
built-in interfaces, modules, memory, LED indicators, chassis ventilation, and the internal clock.
Product Serial Number Location
The serial number label for Cisco 2801 routers is located on the rear of the chassis, along the bottom
edge near the lower left corner. (See Figure 4.)
95902
Do Not Remove During Network O
peration
COMPACT FLASH
CONSOLE
OPTIO
NAL RPS INPUT
12V 11A
AUX
SYS
PW
R
AUX/
PWR
SYS
ACT
CF
-48V 4A
100-240 V~ 4A
50/60 Hz
0
1
95903
Do Not Remove During Network Operation
COMPACT FLASH
CONSOLE
AUX
SYS
PWR
AUX/
PWR
SYS
ACT
CF
0
1
O
P
T
IO
N
A
L
R
P
S
IN
P
U
T
1
2
V
1
1
A
-4
8
V
4
A
100-240 V
~ 4A
50/60 H
z