S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
B-4
Cisco MDS 9100 Series Hardware Installation Guide
OL-21514-01
Appendix B Technical Specifications
Power Specifications
Table B-4
lists the specifications for the Cisco MDS 9100 Series DC input power supply.
Power Supply Requirements and Heat Dissipation Specifications
Table B-5
provides a sample calculation of power and heat dissipation for the Cisco MDS 9100 Series
AC input power supply.
Power supply output capacity
300 W
Power supply output voltage
12 V +/- 6% up to 25 A
Output holdup time
20ms when input > 100 VAC
Table B-3
Cisco MDS 9100 Series AC Input Power Supply Specifications
AC Input Power Supply
Specification
Table B-4
Cisco MDS 9100 Series DC Input Power Supply Specifications
DC Input Power Supply
Specification
DC input voltage
-48 VDC to -60 VDC continuous
DC input current rating
(maximum)
8 A at -48 VDC
6.67 A at -60 VDC.
Note
DC power supply does not use country
specific power cords. For more
information on DC power supply see
Removing and Installing DC Power
Supplies section in Installing the Cisco
MDS 9100 Series chapter.
Power supply output capacity
300 W
Power supply output voltage
12 V +/- 6% up to 25 A
Output holdup time
8 ms when input > 100 VAC
Table B-5
Power and Heat Dissipation for AC Input Power Supply
Model Number/Module
AC Input
Power (watts)
Heat Diss.
(BTU/hr)
Input Current
85 VAC
(amps)
110 VAC
(amps)
220 VAC
(amps)
Cisco MDS 9148
Switch (with fan
modules)
120 maximum 410
1.76
1.36
0.68
Cisco MDS 9134
Switch (with fan
modules)
96 maximum
330
1.41
1.10
.55
Cisco MDS 9124
Switch (with fan
modules)
80 maximum
330
1.41
.73
.36
