Cisco WS-C2950-24 Datasheet page 14

Feature Description
Customers can provide power to a switch by using the internal power supply, the Cisco RPS 675. The connectors are located
Power
Connectors
at the back of the switch.
Internal Power Supply Connector
– The internal power supply is an autoranging unit.
– The internal power supply supports input voltages between 100 and 240 VAC.
– Use the supplied AC power cord to connect the AC power connector to an AC power outlet.
Cisco RPS 675 Connector
– The connector offers connection for an optional Cisco RPS 675 that uses AC input and supplies DC output to the
– The connector offers a 675-watt redundant power system that supports one of up to six external network devices
– The connector automatically senses when the internal power supply of a connected device fails and provides power
– Attach only the Cisco RPS 675 (model PWR675-AC-RPS-NI=) to the redundant power supply receptacle with this
Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications.
Indicators
System status LEDs: system, RPS, and bandwidth utilization indications.
Operating temperature: 32 to 113°F (0 to 45°C)
Environmental
Storage temperature: -13 to 158°F (-25 to 70°C)
Ranges
Operating relative humidity: 10 to 85 percent (noncondensing)
Operating altitude: Up to 10,000 ft (3000 m)
Storage altitude: Up to 15,000 ft (4500 m)
Not intended for use on top of desktops or in open office environments
Power consumption: 30W maximum, 102 BTUs per hour (Cisco Catalyst 2950T-24, 2950C-24, 2950G-12, and
Power
2950G-24)
Requirements
Power consumption: 45W maximum, 154 BTUs per hour (Cisco Catalyst 2950G-48)
AC input voltage: 100 to 127, 200 to 240 VAC (autoranging)
AC input frequency: 47 to 63 Hz
DC input voltages for Cisco RPS 675: +12V @ 4.5A
ISO 7779, bystander position, operating to an ambient temperature of 30°C:
Acoustic Noise
WS-C2950-24, WS-C2950-12, WS-C2950C-24, and WS-C2950T-24: 46 dBa
WS-C2950G-12, WS-C2950G-24: 46 dBa
WS-C2950G-48: 48 dBa
482,776 hours (Cisco Catalyst 2950G-12)
Predicted Mean
475,184 hours (Cisco Catalyst 2950G-24)
Time Between
Failure (MTBF)
479,086 hours (Cisco Catalyst 2950G-24-DC)
256,446 hours (Cisco Catalyst 2950G-48)
574,284 hours (Cisco Catalyst 2950T-24)
477,080 hours (Cisco Catalyst 2950C-24)
Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.com.
switch.
and provides power to one failed device at a time.
to the failed device, preventing loss of network traffic.
connector.
© 2004 Cisco Systems, Inc. All rights reserved.
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