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Feature Description
Power
Connectors
Customers can provide power to a switch by using the internal power supply, the Cisco RPS 675. The connectors are located
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
switch.
– The connector offers a 675-watt redundant power system that supports one of up to six external network devices
and provides power to one failed device at a time.
– The connector automatically senses when the internal power supply of a connected device fails and provides power
to the failed device, preventing loss of network traffic.
– Attach only the Cisco RPS 675 (model PWR675-AC-RPS-NI=) to the redundant power supply receptacle with this
connector.
Indicators
• Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications.
• System status LEDs: system, RPS, and bandwidth utilization indications.
Environmental
Ranges
• Operating temperature: 32 to 113°F (0 to 45°C)
• Storage temperature: -13 to 158°F (-25 to 70°C)
• 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
Requirements
• Power consumption: 30W maximum, 102 BTUs per hour (Cisco Catalyst 2950T-24, 2950C-24, 2950G-12, and
2950G-24)
• 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
Acoustic Noise
• ISO 7770, bystander position, operating to an ambient temperature of 30°C:
• 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
Predicted Mean
Time Between
Failure (MTBF)
• 482,776 hours (Cisco Catalyst 2950G-12)
• 475,184 hours (Cisco Catalyst 2950G-24)
• 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)
(16 pages)
(12 pages)
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