Technical Specifications

Table A-1 through Table A-5 list the technical specifications for the Catalyst 2950 switches. Table A-6 lists the technical specifications for fiber-optic uplink ports.

Table A-7 lists the regulatory agency approvals for the switches other than the Catalyst 2950 Long-Reach Ethernet (LRE) switches. Table A-8 and Table A-9 list the regulatory agency approvals for the Catalyst 2950 LRE switches. Table A-10 lists the regulatory agency approval only for the Catalyst 2950G-24-EI-DC switch.

Table A-1 Technical Specifications for Catalyst 2950-12, 2950-24, 2950C-24, 2950SX-24, and 2950T-24 Switches

Environmental Ranges
	Operating temperature	32 to 113°F (0 to 45°C)
	Storage temperature	-13 to 158°F (-25 to 70°C)
	Operating humidity	10 to 85% (noncondensing)
	Operating altitude	Up to 10,000 ft (3000 m)
	Storage altitude	Up to 15,000 ft (4570 m)
	Shock	84 in. per sec (2.13 m per sec)¹
Power Requirements
	AC input voltage	100 to 127/200 to 240 VAC (autoranging) 50 to 60 Hz
	DC input voltages for the Cisco RPS² 300 Redundant Power System	+12V@4.5A
	DC input voltages for the Cisco RPS 675	+12V@4.5A
	Power consumption	30W (maximum) 102 Btus per hour
	Power rating	0.05 kVA
Physical Dimensions
	Weight	6.5 lb (3 kg)
	Dimensions (H x W x D)	1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm)

1 This switch meets ASTM D3332.

2 RPS = redundant power system

Table A-2 Technical Specifications for Catalyst 2950G-12-EI, 2950G-24-EI, 2950G-48-EI, 2950SX-48-SI, and 2950T-48-SI Switches

		Catalyst 2950G-12-EI and 2950G-24-EI Switches	Catalyst 2950G-48-EI, 2950SX-48-SI, and 2950T-48-SI Switches
Environmental Ranges
	Operating temperature	32 to 113°F (0 to 45°C)	32 to 113°F (0 to 45°C)
	Storage temperature	-13 to 158°F (-25 to 70°C)	-13 to 158°F (-25 to 70°C)
	Operating humidity	10 to 85% (noncondensing)	10 to 85% (noncondensing)
	Operating altitude	Up to 10,000 ft (3000 m)	Up to 10,000 ft (3000 m)
	Storage altitude	Up to 15,000 ft (4570 m)	Up to 15,000 ft (4570 m)
	Shock	84 in. per sec (2.13 m per sec)¹	84 in. per sec (2.13 m per sec)
Power Requirements
	AC input voltage	100 to 127/200 to 240 VAC (autoranging) 50 to 60 Hz	100 to 127/200 to 240 VAC (autoranging) 50 to 60 Hz
	DC input voltage for the Cisco RPS² 300	+12V@4.5A	+12V@4.5A
	DC input voltage for the Cisco RPS 675	+12V@4.5A	+12V@4.5A
	Power consumption	30W (maximum) 102 Btus per hour	45W (maximum) 154 Btus per hour
	Power rating	0.05 kVA	0.075 kVA
Physical Dimensions
	Weight	6.5 lb (3 kg)	10.5 lb (4.8 kg)
	Dimensions (H x W x D)	1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm)	1.72 x 17.5 x 13 in. (4.36 x 44.45 x 33.02 cm)

1 This switch meets ASTM D3332.

2 RPS = redundant power system

Table A-3 Technical Specifications for Catalyst 2950G-24-EI-DC Switch

Environmental Ranges
	Operating temperature	32 to 113°F (0 to 45°C)
	Storage temperature	-13 to 158°F (-25 to 70°C)
	Operating humidity	10 to 85% (noncondensing)
	Operating altitude	Up to 10,000 ft (3000 m)
	Storage altitude	Up to 15,000 ft (4570 m)
	Shock	84 in. per sec (2.13 m per sec)¹
Power Requirements
	Power consumption	30W (102 Btus per hour)
	Power rating	0.05 kVA
	DC input voltage	-36 to -72 VDC
	Wire gauge for power connection	18 AWG^²(6 AWG for protective earth)
	Branch circuit protection	5A
Physical Dimensions
	Weight	6.5 lb (3 kg)
	Dimensions (H x W x D)	1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm)

1 This switch meets ASTM D3332.

2 AWG = American Wire Gauge

Table A-4 Technical Specifications for Catalyst 2950ST-8 LRE and Catalyst-2950ST-24 LRE Switches

Environmental Ranges
	Operating temperature	32 to 113°F (0 to 45°C)
	Storage temperature	-13 to 158°F (-25 to 70°C)
	Operating humidity	10 to 85% (noncondensing)
	Operating altitude	Up to 10,000 ft (3000 m)
	Storage altitude	Up to 15,000 ft (4570 m)
	Shock	84 in. per sec (2.13 m per sec)¹
Power Requirements
	AC input voltage	100 to 127/200 to 240 VAC (autoranging) 50 to 60 Hz
	DC input voltage for the Cisco RPS² 300	+12V@4A
	DC input voltage for the Cisco RPS 675	+12V@4A
	Power consumption	50W (maximum) 171 Btus per hour
	Power rating	0.083 kVA
	Branch circuit protection	5A
Physical Dimensions
	Weight	8 lb (3.6 kg)
	Dimensions (H x W x D)	1.73 x 17.5 x 9.96 in. (4.36 x 44.45 x 24.18 cm)

1 This switch meets ASTM D3332.

2 RPS = redundant power system

Table A-5 Technical Specifications for Catalyst-2950ST-24 997 LRE Switches

Environmental Ranges
	Operating temperature	32 to 113°F (0 to 45°C)
	Storage temperature	-13 to 158°F (-25 to 70°C)
	Operating humidity	10 to 85% (noncondensing)
	Operating altitude	Up to 10,000 ft (3000 m)
	Storage altitude	Up to 15,000 ft (4570 m)
	Shock	84 in. per sec (2.13 m per sec)¹
Power Requirements
	Power consumption	50W (maximum) 171 Btus per hour
	Power rating	0.083 kVA
	DC input voltage	-36 to -72 VDC
	Wire gauge for power connection	18 AWG^²(6 AWG for protective earth)
	Branch circuit protection	5A
Physical Dimensions
	Weight	8 lb (3.6 kg)
	Dimensions (H x W x D)	1.73 x 17.5 x 9.96 in. (4.36 x 44.45 x 24.18 cm)

1 This switch meets ASTM D3332.

2 AWG = American Wire Gauge

Table A-6 Fiber-Optic Port Specifications for Catalyst 2950C-24, Catalyst 2950SX-24, and Catalyst 2950 LRE Switches

Fiber-Port Power Levels		Catalyst 2950C-24	Catalyst 2950SX-24	Catalyst 2950ST-8 LRE, 2950ST-24 LRE, and 2950ST-24 LRE 997
	Optical transmitter wavelength	1300 nm¹	850 nm	The transmitter wavelengths, receiver sensitivities, and transmitter power levels are SFP²-module dependent. For this information, refer to the technical specifications that came with your SFP module.
	Optical receiver sensitivity for 50/125-micron cabling	-33.5 to -11.8 dBm³	-13.5 dBm
	Optical receiver sensitivity for 62.5/125-micron cabling	-33.5 to -11.8 dBm	-12.5 dBm
	Optical transmitter power for 50/125-micron cabling	-23.5 to -14 dBm	-9.5 to -4 dBm
	Optical transmitter power for 62.5/125-micron cabling	-20 to -14 dBm	-9.5 to -4 dBm

1 nm = nanometers

2 SFP = small form-factor pluggable

3 dBm = decibel milliwatt

Table A-7 Catalyst 2950 Switch Agency Approvals

Safety	EMC
UL/CSA 60950	FCC Part 15 Class A
IEC 60950/EN 60950	EN 55022: 1998 (CISPR22) Class A
AS/NZS 3260, TS001	EN 55024: 1998 (CISPR24)
CE	VCCI Class A
	AS/NZS 3548 Class A
	CE
	CNS 13438 Class A
	MIC

Table A-8 Catalyst 2950ST-8 LRE and 2950ST-24 LRE Switch Agency Approvals

Safety	EMC
UL/CSA 60950, 3rd edition	USA CFR47, FCC, Part 15, Class A
IEC 60950 with Amendments A1 through A4 and A11	ICES-003, Class A
AS/NZS 3260 with Amendments A1 through A4	EN55022/CISPR22, Class A, 1998
TUV-GS to EN60950 with Amendments A1 through A4 and A11	EN 55024: ITE Immunity Standard. (CE Mark), 1998
CE	EN61000-4-2/IEC1000-4-2: Immunity to ESD
	EN61000-4-3/IEC1000-4-3: Immunity to Radio Frequency Electromagnetic Fields
	EN61000-4-4/IEC1000-4-4: Immunity to Electrical Fast Transients
	EN61000-4-5/IEC1000-4-5: Immunity to Power Line Transients (Surges)
	EN61000-4-6/IEC1000-4-6: Immunity to Radio Frequency Induced Conducted Disturbances
	EN61000-4-11/IEC1000-4-11: Immunity to Voltage Dips, Voltage Variations, and Short Voltage Interruptions
	AS/NZS 3548, Class A
	BSMI, Class A
	VCCI, Class A
	MIC Mark

Table A-9 Catalyst 2950ST-24 LRE 997 Switch Agency Approvals

Safety	EMC
UL/CSA 60950, 3rd edition	USA CFR47, FCC, Part 15, Class A
IEC 60950 with Amendments A1 through A4 and A11	ICES-003, Class A
AS/NZS 3260 with Amendments A1 through A4	EN55022/CISPR22, Class A, 1998
TUV-GS to EN60950 with Amendments A1 through A4 and A11	EN 55024: ITE Immunity Standard. (CE Mark), 1998
CE	EN61000-4-2/IEC1000-4-2: Immunity to ESD
	EN61000-4-3/IEC1000-4-3: Immunity to Radio Frequency Electromagnetic Fields
	EN61000-4-4/IEC1000-4-4: Immunity to Electrical Fast Transients
	EN61000-4-5/IEC1000-4-5: Immunity to Power Line Transients (Surges)
	EN61000-4-6/IEC1000-4-6: Immunity to Radio Frequency Induced Conducted Disturbances
	EN61000-4-11/IEC1000-4-11: Immunity to Voltage Dips, Voltage Variations, and Short Voltage Interruptions

Table of Contents

Technical Specifications