Cisco Catalyst 2960-L-SM Service Manual
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
First Published: 2018-11-30
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Fax: 408 527-0883
Contents
CONTENTS
PREFACE
CHAPTER 1
Preface ix
Document Conventions ix
Obtaining Documentation and Submitting a Service Request xi
Product Overview 1
Switch Models 1
Front Panel 2
PoE Ports 4
10/100/1000 Ports 4
Console Ports 4
USB Type A Port 5
SFP Module Slots 5
LEDs 6
System LED 7
Modes for Port LEDs 8
PoE LED 8
Console LEDs 8
CHAPTER 2
ii
Port LEDs 8
Rear Panel 9
Internal Power Supply 10
Security Slot 10
Network Configurations 11
Switch Installation 13
Safety Warnings 13
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
Box Contents 16
Tools and Equipment 17
Installation Guidelines 17
Verifying Switch Operation 18
Installing the Switch 18
Rack-Mounting 18
Attaching the Rack-Mount Brackets 19
Mounting a 24-Port or 48-Port Switch in a Rack 21
Wall-Mounting 22
Attaching the Brackets for Wall-Mounting 22
Mounting on a Wall 23
Installing the Switch on a Table or Shelf 23
After Switch Installation 24
Contents
CHAPTER 3
Installing the Power Cord Retainer (Optional) 24
Installing SFP Modules 27
Installing an SFP or SFP+ Module 27
Removing an SFP or SFP+ Module 28
Connecting to SFP or SFP+ Modules 28
Connecting to Fiber-Optic SFP or SFP+ Modules 28
Connecting to 1000BASE-T SFP 30
10/100/1000 PoE and PoE+Port Connections 31
10/100/1000 Port Connections 33
Auto-MDIX Connections 33
Troubleshooting 35
Diagnosing Problems 35
Switch POST Results 35
Switch LEDs 35
Switch Connections 35
Bad or Damaged Cable 35
Ethernet and Fiber-Optic Cables 36
Link Status 36
10/100/1000 Port Connections 36
10/100/1000 PoE+ Port Connections 36
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Contents
SFP and SFP+ Module 37
Interface Settings 37
Ping End Device 37
Spanning Tree Loops 37
Switch Performance 38
Speed, Duplex, and Autonegotiation 38
Autonegotiation and Network Interface Cards 38
Cabling Distance 38
Finding the Switch Serial Number 38
APPENDIX A
APPENDIX B
APPENDIX C
Technical Specifications 41
Physical Specifications 41
Environmental Specifications 42
Power Requirements 43
PoE Power Consumption 44
Connector and Cable Specifications 45
Connector Specifications 45
10/100/1000 Ports (Including PoE) 45
SFP Module Connectors 45
Cables and Adapters 46
SFP Module Cables 46
Cable Pinouts 47
Console Port Adapter Pinouts 48
Configuring the Switch 51
Configuring the Switch Using the Configuration Setup Wizard 51
Quick Setup: Accessing the Configuration Setup Wizard 51
Configuring the Switch Using the CLI 53
Accessing the CLI Through the Console Port 53
Connecting the RJ-45 Console Port 53
Connecting the USB Console Port 54
Installing the Cisco Microsoft Windows USB Device Driver 55
Installing the Cisco Microsoft Windows XP USB Driver 55
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Installing the Cisco Microsoft Windows 2000 USB Driver 56
Installing the Cisco Microsoft Windows Vista and Windows 7 USB Driver 56
Uninstalling the Cisco Microsoft Windows USB Driver 57
Uninstalling the Cisco Microsoft Windows XP and 2000 USB Driver 57
Uninstalling the Cisco Microsoft Windows Vista and Windows 7 USB Driver 58
Contents
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Contents
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS,
INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH
THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY,
CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
The following information is for FCC compliance of Class B devices: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be determined by turning the equipment off and on, users are
encouraged to try to correct the interference by using one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Modifications to this product not authorized by Cisco could void the FCC approval and negate your authority to operate the product.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of
the UNIX operating system. All rights reserved. Copyright©1981, Regents of the University of California.
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IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT
LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS
HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network
topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional
and coincidental.
All printed copies and duplicate soft copies of this document are considered uncontrolled. See the current online version for the latest version.
Cisco has more than 200 offices worldwide. Addresses and phone numbers are listed on the Cisco website at www.cisco.com/go/offices.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com
go trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any
other company. (1721R)
©
Cisco Systems, Inc. All rights reserved.
Preface
• Document Conventions , on page ix
• Obtaining Documentation and Submitting a Service Request, on page xi
Document Conventions
This document uses the following conventions:
DescriptionConvention
^ or Ctrl
Italic font
...
|
[x | y]
{x | y}
Both the ^ symbol and Ctrl represent the Control (Ctrl) key on a keyboard. For
example, the key combination ^D or Ctrl-D means that you hold down the Control
key while you press the D key. (Keys are indicated in capital letters but are not
case sensitive.)
Commands and keywords and user-entered text appear in bold font.bold font
Document titles, new or emphasized terms, and arguments for which you supply
values are in italic font.
Terminal sessions and information the system displays appear in courier font.Courier font
Bold Courier font indicates text that the user must enter.Bold Courier font
Elements in square brackets are optional.[x]
An ellipsis (three consecutive nonbolded periods without spaces) after a syntax
element indicates that the element can be repeated.
A vertical line, called a pipe, indicates a choice within a set of keywords or
arguments.
Optional alternative keywords are grouped in brackets and separated by vertical
bars.
Required alternative keywords are grouped in braces and separated by vertical
bars.
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Preface
Preface
DescriptionConvention
[x {y | z}]
Nested set of square brackets or braces indicate optional or required choices within
optional or required elements. Braces and a vertical bar within square brackets
indicate a required choice within an optional element.
string
A nonquoted set of characters. Do not use quotation marks around the string or
the string will include the quotation marks.
Nonprinting characters such as passwords are in angle brackets.< >
Default responses to system prompts are in square brackets.[ ]
!, #
An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.
Reader Alert Conventions
This document may use the following conventions for reader alerts:
Note
Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.
Tip
Means the following information will help you solve a problem.
Caution
Timesaver
Warning
Means reader be careful. In this situation, you might do something that could result in equipment damage or
loss of data.
Means the described action saves time. You can save time by performing the action described in the paragraph.
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work
on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard
practices for preventing accidents. Use the statement number provided at the end of each warning to locate
its translation in the translated safety warnings that accompanied this device. Statement 1071
SAVE THESE INSTRUCTIONS
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Preface
Obtaining Documentation and Submitting a Service Request
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information,
see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco
technical documentation, at:
http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS version 2.0.
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Obtaining Documentation and Submitting a Service Request
Preface
xii
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
CHAPTER 1
Product Overview
The Cisco Catalyst 2960-L Smart Managed Series switches are fixed-configuration, Gigabit Ethernet switches
that provide entry-level enterprise-class Layer 2 access for branch offices, conventional workspace, and
out-of-wiring closet applications.
Cisco Catalyst 2960-L Smart Managed Series switches provide support for the following features:
• 24 or 48 Gigabit Ethernet ports with line-rate forwarding performance
• Four Gigabit Small Form-Factor Pluggable (SFP/SFP+) uplinks
• Power over Ethernet Plus (PoE+) support with up to 120W of PoE budget and Persistent PoE
• Fanless operation with operational temperature up to 45°C for deployment outside the wiring closet
• Reduced power consumption and advanced energy management
• RJ-45 and USB Mini-Type B console ports
• USB Type A port supports file system
• Switch Models, on page 1
• Front Panel, on page 2
• Rear Panel, on page 9
• Network Configurations, on page 11
Switch Models
Table 1: Cisco Catalyst 2960-L Smart Managed 24-Port and 48-Port Switch Models and Description
Switch Model
DescriptionSoftware
Image
Lan LiteWS-C2960L-SM-24TS
Lan LiteWS-C2960L-SM-24PS
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
24 10/100/1000 Ethernet ports; four 1-Gigabit Ethernet small form-factor
pluggable (SFP) module uplink slots
24 10/100/1000 Power over Ethernet plus (PoE+) ports (PoE budget of
195W); four 1-Gigabit Ethernet small form-factor pluggable (SFP) module
uplink slots
1
Front Panel
Product Overview
Switch Model
Image
Lan LiteWS-C2960L-SM-48TS
Lan LiteWS-C2960L-SM-48PS
Lan LiteWS-C2960L-SM-24TQ
Lan LiteWS-C2960L-SM-24PQ
Lan LiteWS-C2960L-SM-48TQ
Lan LiteWS-C2960L-SM-48PQ
DescriptionSoftware
48 10/100/1000 Ethernet ports; four 1-Gigabit Ethernet small form-factor
pluggable (SFP) module uplink slots
48 10/100/1000 Power over Ethernet plus (PoE+) ports (PoE budget of
370W); four 1-Gigabit Ethernet small form-factor pluggable (SFP) module
uplink slots
24 10/100/1000 Ethernet ports; four 10-Gigabit Ethernet small form-factor
pluggable plus (SFP+) module uplink slots
24 10/100/1000 Power over Ethernet plus (PoE+) ports (PoE budget of
195W); four 10-Gigabit Ethernet small form-factor pluggable plus (SFP+)
module uplink slots
48 10/100/1000 Ethernet ports; four 10-Gigabit Ethernet small form-factor
pluggable plus (SFP+) module uplink slots
48 10/100/1000 Power over Ethernet plus (PoE+) ports (PoE budget of
370W); four 10-Gigabit Ethernet small form-factor pluggable plus (SFP+)
module uplink slots
Front Panel
This section describes the front panel components of a 24-port and 48-port Cisco Catalyst 2960-L Smart
Managed switch.
• 24 or 48 downlink ports of one of these types:
• 10/100/1000 Ethernet
• 10/100/1000 PoE+
• Four SFP+ uplink ports
• USB Type A connectors
• USB mini-Type B (console) port
• RJ-45 console port
• LEDs
• Mode button
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Product Overview
Front Panel
Figure 1: Front Panel of a 24-Port Cisco Catalyst 2960-L Smart Managed PoE Switch
5Mode button1
4
24 10/100/1000 PoE+
ports
Note
The yellow
color marking
around the
ports indicates
that the switch
is a PoE
switch.
Figure 2: Front Panel of a 48-Port Cisco Catalyst 2960-L Smart Managed PoE Switch
USB mini-Type B
(console) port
RJ-45 console port6Switch LEDs2
SFP module slots7USB Type A port3
5Mode button1
USB mini-Type B
(console) port
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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PoE Ports
Product Overview
RJ-45 console port6Switch LEDs2
SFP module slots7USB Type A port3
PoE Ports
4
The ports provide PoE support for devices compliant with IEEE 802.3af and IEEE 802.3at and also provide
PoE support for Cisco IP Phones and Cisco Aironet Access Points. The PoE switch ports are Power Source
equipment (PSE) and Power Device (PD) capable and source power to PD devices connected to the downlink
ports. A switch can source POE power of up to 30.8W per port.
Depending on the switch model and the number of PoE ports, the maximum switch power output varies
between 236.89 W to 440.66 W. On a per-port basis, you can control whether or not a port automatically
provides power when an IP phone or an access point is connected.
The PoE ports use RJ-45 connectors with Ethernet pinouts. The 10BASE-T, 100BASE-TX, 1000BASE-T
traffic requires Category 5 or Category 5e twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3
or Category 4 UTP cable.
48 10/100/1000 PoE+
ports
Note
The yellow
color marking
around the
ports indicates
that the switch
is a PoE
switch.
10/100/1000 Ports
The 10/100/1000 ports use RJ-45 connectors with Ethernet pinouts. The 10BASE-T, 100BASE-TX,
1000BASE-T traffic requires Category 5 or Category 5e twisted pair (UTP) cable. The 10BASE-T traffic can
use Category 3 or Category 4 UTP cable.
Console Ports
The console ports connect the switch to a PC running Microsoft Windows or to a terminal server.
• RJ-45 console port (EIA/TIA-232). The RJ-45 console port connection uses an RJ-45-to-DB-9 female
• USB mini-Type B console port (5-pin connector).
If you use the USB mini-Type B console port, the Cisco Windows USB device driver must be installed on
any PC connected to the console port (for operation with Microsoft Windows). Mac OS X or Linux do not
require special drivers.
The 4-pin mini-Type B connector resembles the 5-pin mini-Type B connectors. They are not compatible. Use
only the 5-pin mini-Type B.
cable.
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Product Overview
USB Type A Port
This illustration shows a 5-pin mini-Type B USB port.
Figure 3: USB Mini-Type B Port
With the Cisco Windows USB device driver, you can connect and disconnect the USB cable from the console
port without affecting Windows HyperTerminal operations.
The console output always goes to both the RJ-45 and the USB console connectors, but the console input is
active on only one of the console connectors at any one time. The USB console takes precedence over the
RJ-45 console. When a cable is connected into the USB console port, the RJ-45 console port becomes inactive.
Conversely, when the USB cable is disconnected from the USB console port, the RJ-45 port becomes active.
You can use the command-line interface (CLI) to configure an inactivity timeout which reactivates the RJ-45
console if the USB console has been activated and no input activity has occurred on the USB console for a
specified time.
After the USB console deactivates due to inactivity, you cannot use the CLI to reactivate it. Disconnect and
reconnect the USB cable to reactivate the USB console. For information on using the CLI to configure the
USB console interface, see the software guide.
USB Type A Port
The USB Type A port provides access to external USB flash devices (also known as thumb drives or USB
keys).
The port supports Cisco USB flash drives with capacities from 128 MB to 8 GB (USB devices with port
densities of 128 MB, 256 MB, 1 GB, 4 GB, and 8 GB are supported). Cisco IOS software provides standard
file system access to the flash device: read, write, erase, and copy, as well as the ability to format the flash
device with a FAT file system.
It provides you with the ability to automatically upgrade the internal flash with the USB drive's configuration
and image for emergency switch recovery using USB auto-upgrade. This feature checks the internal flash for
a bootable image and configuration and if either image or the configuration is not available, then the USB
drive is checked for boot images and configuration. If the boot image and configuration are available, these
are copied to flash for the reboot.
SFP Module Slots
The switch has four 1G SFP or 10G SFP+ module slots. The SFP and SFP+ modules provide copper or
fiber-optic connections to other devices. These transceiver modules are field replaceable, and provide the
uplink interfaces when installed in an SFP module slot. The SFP modules have LC connectors for fiber-optic
connections or RJ-45 connectors for copper connections. The SFP slots support only SFP modules.
For Cisco SFP modules documentation, including compatibility matrixes, refer to this URL:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
Table 2: Port mapping for Cisco Catalyst 2960-L Smart Managed 24-Port Switch models
10-GigabitEthernet ports1-GigabitEthernet ports
TenGigabitEthernet0/1GigabitEthernet0/25
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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LEDs
Product Overview
10-GigabitEthernet ports1-GigabitEthernet ports
TenGigabitEthernet0/2GigabitEthernet0/26
TenGigabitEthernet0/3GigabitEthernet0/27
TenGigabitEthernet0/4GigabitEthernet0/28
Table 3: Port mapping for Cisco Catalyst 2960-L Smart Managed 48-Port Switch models
10-GigabitEthernet ports1-GigabitEthernet ports
TenGigabitEthernet0/1GigabitEthernet0/49
TenGigabitEthernet0/2GigabitEthernet0/50
TenGigabitEthernet0/3GigabitEthernet0/51
TenGigabitEthernet0/4GigabitEthernet0/52
LEDs
You can use the switch system and port LEDs to monitor switch activity and performance.
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Product Overview
System LED
Figure 4: Switch LEDs
System LED
1
Only on switch models that support PoE.
Amber
4SYST LED (system)1
PoE LED
1
Console LED5STAT LED (status)2
Port LEDs6SPEED LED3
System StatusColor
System is not powered on.Off
System is operating normally.Green
System is receiving power but is not operating
properly.
POST is in progress.Blinking Green
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Modes for Port LEDs
Modes for Port LEDs
The port LEDs, as a group or individually, display information about the switch and about the individual
ports.
Product Overview
DescriptionPort ModeLED
The port status. This is the default mode.Port statusSTAT
PoE LED
Console LEDs
Port speedSPEED
Even if the PoE mode is not selected, the LED shows PoE problems when they are detected. The PoE LED
is only on the switches that support PoE.
DescriptionColor
PoE mode is not selected.Off
PoE mode is selected. Ports are functioning correctly.Green
Blinking amber
• PoE mode is not selected
• At least one of the 10/100 or 10/100/100 PoE ports has been denied
power
• At least one of the ports has a PoE fault
The port operating speed: 10, 100, or 1000
Mb/s.
The PoE status.PoE port powerPoE
Port LEDs
8
The console LEDs show which console port is in use.
If you connect a cable to a console port, the switch automatically uses that port for console communication.
If you connect two console cables, the USB-mini console port has priority.
DescriptionColorLED
USB-mini console port is active.GreenUSB-mini console port
Off
RJ-45 ports and SFP-module slots have port LEDs. These LEDs, as a group or individually, provide information
about the switch and about the individual ports.
DescriptionLED Color
No link or port was administratively shut down.Off
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
Port is not active.
RJ-45 console port is active.
Product Overview
Rear Panel
DescriptionLED Color
Link present but is not sending or receiving data.Green
Rear Panel
Blinking green
Alternating green-amber
Activity. Port is sending or receiving data.
Note
Link fault. Error frames can affect connectivity, and errors such as
excessive collisions, CRC errors, and alignment and jabber errors are
monitored for link faults.
Note
Amber
Port is blocked by Spanning Tree Protocol (STP) and is not forwarding
data. After a port is reconfigured, the port LED is amber for up to 30
seconds as STP searches for loops.
Note
• A security slot
• An AC power connector
• A loop (for the optional power cord retainer)
Currently this is not supported for SFP ports.
Currently this is not supported for SFP ports.
Currently this is not supported for SFP ports.
• Heat sink fins (PoE models only)
Figure 5: Rear Panel of a Non-PoE Switch
An AC power connector2
3Security Slot1
A loop (for the optional
power cord retainer)
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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Internal Power Supply
Product Overview
Figure 6: Rear Panel of a PoE Switch
Internal Power Supply
All the switches are powered through their internal power supplies. The internal power supply is an autoranging
unit that supports input voltages between 100 and 240 VAC (max of 90V to 264V). The AC frequency range
of the power supply is 50Hz~60Hz. Plug the AC power cord into the AC power connector and into an AC
power outlet.
Security Slot
The switches have security slots on the rear panel. You can install an optional cable lock, such as the type
that is used to secure a laptop computer, to secure the switch.
3Security Slot1
A loop (for the optional
power cord retainer)
Heat sink fins4An AC power connector2
Cisco Catalyst 2960-L Smart Managed Series 24-Port and 48-Port Switch Hardware Installation Guide
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