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Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
78-6286-05
Chapter 1 Product Overview
Switch Components
Figure 1-6 Catalyst 2980G Airflow
Power Supplies
There is no power switch on the switches. AC power is present in the power
supply when the power cord is plugged in.
The environmental monitoring and reporting functions allow you to maintain
normal system operation by correcting adverse environmental conditions before
loss of operation.
Each power supply monitors its own temperature and output voltages. If the power
supply becomes excessively hot, it shuts down to prevent damage. The switches
monitor the operating condition of the power supply and report the status using
switch software.
The switches have the following power supplies:
• 120 W AC internal power supply—Catalyst 2948G switch
• 156 W AC internal power supply—Catalyst 2948G-GE-TX switch
• 175 W AC internal power supply—Catalyst 2980G switch
• 156 W AC internal power supply—Catalyst 2980G-A switch
Note For complete power specifications for the Catalyst 2948G, 2948G-GE-TX,
and 2980G switches, see Appendix A, “Specifications.”
These switches also be used with an optional Cisco Redundant Power System
(RPS).
32064
STATUS
SLOT 2
SLOT 3
1
0
/
1
0
0
/
1
0
0
0
E
T
H
E
R
E
N
E
T
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
1
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
2
3
2
3
3
3
4
3
5
3
6
3
7
3
8
3
9
4
0
4
1
4
2
4
3
4
4
4
5
4
6
4
7
4
7
4
8
4
8
3
3
3
4
P
W
R
C
O
N
S
O
L
E
C
A
T
A
L
Y
S
T 2
9
8
6
1
0
M
B
M
G
T
R
E
S
E
T
1
1
2
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6