Figure 4, Is tw, Figure 5 – Cisco 3800 Series User Manual
Page 17: Router descriptions

Router Descriptions
3
Overview of Cisco 3800 Series Routers
OL-5966-01
Figure 4
Rear Panel of Cisco 3825 Router
Figure 5
Front View of Cisco 3845 Router
1
Network module slot 2
6
HWIC slot 2
2
Screw holes for grounding lug
7
HWIC slot 0
3
Network module slot 1
8
Console and auxiliary ports
4
HWIC slot 3
9
Gigabit Ethernet ports
5
HWIC slot 1
10 Slot for optional SFP module
AUX
CONSOLE
AUX
GE 0/1
SPD
LNK
SPD
LNK
GE 0/0
H
W
I
C
2
H
W
I
C
0
1
2
H
W
I
C
3
H
W
I
C
1
SFP
2
9
8
7
6
5
4
EN
NM-
ESW-
16
15x 7x
14x
6x
13x
5x
FastEthernet Ports
12x
4x
11x 3x
10x
2x
9x
1x
8x
0x
Ext
Pwr
-48V
0x
8x
7x
15x
GE
10/100/
1000
Base-Tx
3
116842
Cisco 3825
EN
NMD-
ESW-
36
23x
5x
FastEthernet Ports
22x
4x
21x
3x
20x
2x
19x
1x
18x
0x
29x 11x
28x 10x
27x
9x
26x
8x
25x
17
24x
6x
35x 17x
34x 16x
33x 15x
32x 14x
31x 13x
30x 12x
Ext
Pwr
-48V
0x
18x
GE0
10/100/
1000
Base-Tx
35x
10/100/1000
Base-Tx
GE1
17x
1
10
117045