Cisco Network Device 2800 Introduction Manual page 19

Figure 4
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The serial number for Cisco 2801 routers is 11 characters long.
Note
The serial number label for Cisco 2811 routers is located on the rear of the chassis, near the top right
corner, to the left of the CLEI label. (See
Figure 5
EN M0
The serial number for Cisco 2811 routers is 11 characters long.
Note
OL-5783-01
Serial Number Location on the Cisco 2801 Router
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NNN XXXX
Serial Number Location on the Cisco 2811 Router
S
L
O
T
3
S
L
O
T
1
Figure 5.)
S
L
O
T
A= ACT
2 A= FDX
S= SPE ED
A
A= LIN K
FE 0/1
F FE 0/0
A
S
S
L F
O L
T S
0
L
PVD M1
PVD M0
AIM 1
AIM 0
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Overview of Cisco 2800 Series Routers
Hardware Features
3