Cisco Systems 3560-X, 3750-X manual Fan Modules, XPS Connector, 1-19

Chapter 1 Product Overview

Rear Panel Description

For information about replacing a power supply module, wiring a DC power supply module, and module specifications, see Chapter 3, “Power Supply and Fan Module Installation,” and Appendix A, “Technical Specifications.”

Fan Modules

The switch has two internal hot-swappable 12-V fan modules, each with two fans. The air circulation system consists of the fan modules and the power supply modules. The airflow patterns vary depending on the power supply configuration.

Figure 1-8shows the airflow patterns for the 24- and 48-port switches. The blue arrow shows cool air flow, and the red arrow shows warm air flow. When the fan modules are operating properly, a green LED is on at the top left corner of the fan assembly (viewed from the rear). If the fan fails, the LED turns to amber.

Figure 1-8 24- and 48-Port Switch Airflow Patterns

MODE
1	2

CONSOLE
SYST	XPS	STAT
EN	S-PWR		SPEED
		MAST		DUPLX
			S
			TACK	PoE

3	4	6
	5		8
		7		10
			9		11	12

1 2

3	4	6
	5		8
		7		10
			9		11	12

1 2

3	4	6
	5		8
		7		10
			9		11	12

1 2

3	4	6
	5		8
		7
			9
			Catalyst

				C3KX-	NM-10G	NETWORK
						MODULE
10	11	12
3750-X
	PoE+48		G1	G2/TE1
					G3	G4/TE2

253199

For information about installing a fan module and the module specifications, see Chapter 3, “Power Supply and Fan Module Installation,” and Appendix A, “Technical Specifications.”

XPS Connector

Warning Attach only the following Cisco external power system to the switch: XPS 2200. Statement 387

The Cisco XPS-2200 is a expandable power system that can support nine network switches and provides power to one or two failed switches at a time. It senses when the power supply of a connected switch fails and provides power to the failed switch.

Use the XPS-2200 only with approved Cisco XPS cables. You can order these XPS cables for connecting your switch to the XPS-2200 from your Cisco sales representative:

•CAB-XPS-58CM (0.58-meter cable)

•CAB-XPS-150CM (1.5-meter cable)

The Cisco XPS-2200 has a nominal output level of –56 V. The total maximum output power depends on the installed power supply modules.

	Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01		1-19