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Connectors and
cabling
• 10BASE-T ports: RJ-45 connectors, 2-pair Category 3, 4, or 5 unshielded twisted-pair (UTP)
cabling
• 100BASE-TX ports: RJ-45 connectors, 2-pair Category 5 UTP cabling
• 1000BASE-T ports: RJ-45, 2-pair Category 5 UTP cabling
• 1000BASE-T SFP-based ports: RJ-45 connectors, 2-pair Category 5 UTP cabling
• 1000BASE-SX, -LX/LH, -ZX, and CWDM* SFP-based ports: LC fiber connectors
(single-mode, or multimode fiber)
• Cisco StackWise stacking ports: copper-based Cisco StackWise cabling
• Management console port: RJ-45-to-DB9 cable for PC connections
Power connectors Customers can provide power to a switch by using either the internal power supply or the
Cisco RPS 675. The connectors are located at the back of the switch.
Internal Power Supply Connector
• The internal power supply is an auto-ranging unit.
• The internal power supply supports input voltages between 100 and 240 volts alternating
current (VAC).
• Use the supplied alternating-current (AC) power cord to connect the AC power connector to
an AC power outlet.
Cisco RPS Connector
• The connector offers connection for an optional Cisco RPS 675 that uses AC input and
supplies direct-current (DC) output to the switch.
• The connector offersa 675-watt (W) RPS that supports up to 6 external network devicesand
provides power to 1 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.
• Only the Cisco RPS 675 (model PWR675-AC-RPS-N1=) should be attached to the
redundant-power-supply receptacle.
Indicators • Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications
• System-status LEDs: system, RPS, and bandwidth-utilization indications
Dimensions • 2.59 x 17.5 x 11.6 inches (in.) (6.59 x 44.5 x 29.5 centimeters [cm]) (Cisco Catalyst
3750G-24TS)
• 1.73 x 17.5 x 12.83 in (4.39 x 44.5 x 32.6 cm) (Cisco Catalyst 3750G-24T)
• 1.73 x 17.5 x 12.83 (4.39 x 44.5 x 32.6 cm) (Cisco Catalyst 3750G-12S)
• 1.73 x 17.5 x 11.83 in. (4.39 x 44.5 x 30.1 cm) (Cisco Catalyst 3750-48TS)
• 1.73 x 17.5 x 11.83 in. (4.39 x 44.5 x 30.1 cm) (Cisco Catalyst 3750-24TS)
Weight (H x W x D) • 12.5 pounds (lb) (5.68 kilograms [kg]) (Cisco Catalyst 3750G-24TS)
• 10.0 lb (4.55 kg) (Cisco Catalyst 3750G-24T and Catalyst 3750G-12S)
• 9.1 lb (4.1 kg) (Cisco Catalyst 3750-48TS)
• 8.0 lb (3.6 kg) (Cisco Catalyst 3750-24TS)
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% (noncondensing)
• Operating altitude: Up to 10,000 feet (ft) (3049 meters [m])
• Storage altitude: Up to 15,000 ft (4573 m)
Table 2 Hardware
Description Specification