Cisco CATALYST 2950-24 XL 24 PORT RJ45 RACK MOUNT 10/100 SWITCH STANDARD SOFTWARE Guida Specifiche
1-23
Catalyst 2950 Switch Hardware Installation Guide
OL-6156-01
Chapter 1 Overview
Rear-Panel Description
•
CAB-NP1200-AC-IT=
•
CAB-NP1200-AC-JP=
•
CAB-NP1200-AC-UK=
•
CAB-NP1200-AC-US=
DC Power Connector
The Catalyst 2950G-24-EI-DC and Catalyst 2950ST-24 LRE 997 switches have an internal DC-power
converter. It has dual feeds (A and B) that are diode-OR-ed into a single power block. For installation
instructions, see
converter. It has dual feeds (A and B) that are diode-OR-ed into a single power block. For installation
instructions, see
Appendix C, “Connecting to DC Power.”
Caution
You must connect the Catalyst 2950G-24-EI-DC and 2950ST-24 LRE 997 switches only to a DC-input
power source that has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this
range, the switch might not operate properly or might be damaged.
power source that has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this
range, the switch might not operate properly or might be damaged.
Cisco RPS Connector
Specific Cisco RPS models support specific Catalyst 2950 switches:
•
Cisco RPS 300 (model PWR300-AC-RPS-N1)
•
Cisco RPS 675 (model PWR675-AC-RPS-N1=)
Cisco RPS 300
The Cisco RPS 300 has two output levels: –48 V and 12 V with a total maximum output power of 300 W.
Use the supplied RPS connector cable to connect the RPS to the switch.
Use the supplied RPS connector cable to connect the RPS to the switch.
Warning
Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the RPS receptacle. Statement 100B
The RPS is a 300-W redundant power system that can support six external network devices and provides
DC power to one failed device at a time. It automatically senses when the internal power supply of a
connected device fails and provides power to that device, preventing loss of network traffic.
DC power to one failed device at a time. It automatically senses when the internal power supply of a
connected device fails and provides power to that device, preventing loss of network traffic.
For more information, see the Cisco RPS 300 documentation.
Cisco RPS 675
The Cisco RPS 675 has two output levels: –48 V and 12 V with a total maximum output power of 675 W.
Use the supplied RPS connector cable to connect the RPS to the switch.
Use the supplied RPS connector cable to connect the RPS to the switch.
Warning
Attach only the Cisco RPS 675 (model PWR675-AC-RPS-N1=) to the RPS receptacle. Statement 100C
The RPS is a 675-W redundant power system that can support six external network devices and provides
DC power to one failed device at a time. It automatically senses when the internal power supply of a
connected device fails and provides power to that device, preventing loss of network traffic.
DC power to one failed device at a time. It automatically senses when the internal power supply of a
connected device fails and provides power to that device, preventing loss of network traffic.
For more information, see the Cisco RPS 675 documentation.