DELL S4810 System Release Notes OS Version 9.14 1.12

Important Data

This document contains information on open and resolved caveats, and operational information specific to the Dell Networking
OS software and the S4810 platform.
Current Release Version: 9.14(1.12)
Release Date: 2022-05-20
Previous Release Version: 9.14(1.10)

Topics:

• Document Revision History
• Supported Brocade Cables
• Supported Hardware
• New Dell Networking OS Version 9.14(1.12) Features
• Restrictions
• Changes to Default Behavior and CLI Syntax
• Documentation Corrections
• Deferred Issues
• Fixed Issues
• Known Issues
• S4810 Upgrade Procedures: Overview
• Upgrading the S4810 Dell Networking OS Image and Boot Code
• Upgrading the CPLD
• VLT Upgrade Procedure
• Support Resources

For more information on hardware and software features, commands, and capabilities, refer to the Dell Networking support website at: https://www.dell.com/support

Document Revision History

Table 1. Revision History

Supported Brocade Cables

The following Brocade cables are supported with this platform:

Table 2. Supported Brocade Cables

Cable Description

CUS,PCT B-8000 10GbE TWINAX 3 METER 8PACK
CUS,PCT B-8000 10GbE TWINAX 5 METER 1PACK
CUS,PCT B-8000 10GbE TWINAX 5 METER 8PACK
CUS,PCT B-8000 10GbE TWINAX 1 METER 1PACK
CUS,PCT B-8000 10GbE TWINAX 1 METER 8PACK
CUS,PCT B-8000 10GbE TWINAX 3 METER 1PACK

Supported Hardware

The following hardware is supported with this platform:

Table 3. Supported Hardware

Hardware

48 port 10G SFP+ ports with 4 QSFP+ 40G ports
48 port 10G SFP+ ports with 4 QSFP+ 40G ports, 1 DC power supply and 2 fan subsystem with airflow from I/O side to power supply unit (PSU) side
48 port 10G SFP+ ports with 4 QSFP+ 40G ports, 1 AC power supply and 2 fan subsystem with airflow from I/O side to power supply unit (PSU) side
48 port 10G SFP+ ports with 4 QSFP+ 40G ports, 1 DC power supply and 2 fan subsystem with airflow from power supply unit (PSU) side to I/O side
48 port 10G SFP+ ports with 4 QSFP+ 40G ports, 1 AC power supply and 2 fan subsystem with airflow from power supply unit (PSU) side to I/O side
S4810 Series – Fan with airflow from I/O side to power supply unit (PSU) side
S4810 Series – Fan with airflow from PSU side to I/O side
S4810 Series – DC Power supply with airflow from I/O side to power supply unit (PSU) side
S4810 Series – DC power supply with airflow from power supply unit (PSU) side to I/O side
S4810 Series – AC Power supply with airflow from I/O side to power supply unit (PSU) side
S4810 Series – AC Power supply with airflow from power supply unit (PSU) side to I/O side

|NOTE: Fan Modules and Power supplies (PSUs) are field replaceable units. Dell Networking does not support a mix of power supply types (i.e., AC and DC) in the same switch.
| NOTE: All fans and PSUs must have the same airflow direction. Should a mixed airflow configuration happen, the switch detects the discrepancy and performs a shutdown, if the module is not replaced within few minutes.
| NOTE: Due to hardware limitation, 1G Cu SFP with QSA is not supported.

New Dell Networking OS Version 9.14(1.12) Features

The following features have been added to the S4810 with Dell Networking OS version 9.14(1.12): None

Restrictions

If an Intel X520 CNA adapter is used as an FCoE initiator, follow these steps to establish FCoE sessions to send and receive traffic on an S4810 switch:

1. On the server, uninstall the old Intel driver (version 13.0.0 or older).

2. Re-install the Intel driver using version 13.5 A00 (or later) from the http://www.dell.com website. Important: During the installation, do not select the ISCSI part of the driver; select only the FCoE check box.

3. On each server-facing port, enter the following commands in interface configuration mode. The dcbx version cee command configures a port to use the CEE (Intel 1.01) version of DCBX. Configure server-facing ports with the shutdown and no shutdown commands as needed. For example:

   Dell# interface tenGigabitEthernet 0/1 Dell(conf-if-te-0/1)# portmode hybrid Dell(conf-if-te-0/1)# switchport Dell(conf-if-te-0/1)# protocol lldp Dell(conf-lldp)# dcbx port-role auto-downstream Dell(conf-lldp)# dcbx version cee Dell(conf-lldp)# exit Dell(conf-if-te-0/1)# spanning-tree pvst edge-port Dell(conf-if-te-0/1)# no shutdown Dell(conf-if-te-0/1)# exit Dell#

4. Display information on FIP-snooped sessions and check the entries in ENode Interface fields to see if you have established the FCoE session on a server-facing port.

show fip-snooping sessions

EXEC Privilege

• The following features are not available in the Dell Networking OS from version 9.7(0.0):
  • PIM ECMP
  • Static IGMP join (ip igmp static-group)
  • IGMP querier timeout configuration (ip igmp querier-timeout)
  • IGMP group join limit (ip igmp group join-limit)
• If you use the interface range command to select multiple interfaces that are added to the management VRF, the ipv6 address command does not display the autoconfig option. You can configure the autoconfig command on individual interfaces.
• If you use the interface range command to select multiple interfaces that are added to the management VRF, the ipv6 nd command displays the following options but they do not take effect if you use them:
  • dns-server
  • hop-limit
  • managed-config-flag
  • max-ra-interval
  • mtu
  • other-config-flag
  • prefix
  • ra-guard
  • ra-lifetime
  • reachable-time
  • retrans-timer
  • suppress-ra

Changes to Default Behavior and CLI Syntax

Following default behavior and CLI syntax changes occurred during the Dell Networking OS release:

• To enhance security, the default RSA key size has been changed to 2048 bits from 1024 bits from 9.14.1.10 onwards.

Documentation Corrections

This section describes the errors identified in the current release of the Dell Networking OS.

None

Deferred Issues

Issues that appear in this section were reported in Dell Networking OS version 9.14(1.0) as open, but have since been deferred.
Deferred issues are those that are found to be invalid, not reproducible, or not scheduled for resolution.

Deferred issues are reported using the following definitions.

running process that requires a restart of AFM, the router, switch, or process.
S2 — Critical: An issue that renders the system or a major feature unusable, which can have a pervasive impact on the system or network, and for which there is no work-around acceptable to the customer.
S3 — Major: An issue that affects the functionality of a major feature or negatively effects the network for which there exists a work-around that is acceptable to the customer.
S4 — Minor: A cosmetic issue or an issue in a minor feature with little or no network impact for which there might be a work-around.
Synopsis| Synopsis is the title or short description of the issue.
Release Notes| Release Notes description contains more detailed information about the issue.
Work around| Work around describes a mechanism for circumventing, avoiding, or recovering from the issue. It might not be a permanent solution.

Issues listed in the “Fixed Issues” section should not be present, and the work-around is unnecessary, as the version of code for which this release note is documented has resolved the issue.

Deferred S4810 9.14(1.0) Software Issues

Issues that appear in this section were reported in Dell Networking OS version 9.14(1.0) as open,

but have since been deferred.
Deferred caveats are those that are found to be invalid, not reproducible, or not scheduled for resolution.

The following issues have been deferred in the Dell Networking OS version 9.14(1.0):

None.

Fixed Issues

Fixed issues are reported using the following definitions.

running process that requires a restart of AFM, the router, switch, or process.
S2 — Critical: An issue that renders the system or a major feature unusable, which can have a pervasive impact on the system or network, and for which there is no work-around acceptable to the customer.
S3 — Major: An issue that affects the functionality of a major feature or negatively effects the network for which there exists a work-around that is acceptable to the customer.
S4 — Minor: A cosmetic issue or an issue in a minor feature with little or no network impact for which there might be a work-around.
Synopsis| Synopsis is the title or short description of the issue.
Release Notes| Release Notes description contains more detailed information about the issue.
Work around| Work around describes a mechanism for circumventing, avoiding, or recovering from the issue. It might not be a permanent solution.

The work-around is unnecessary, as the version of code for which this release note is documented has resolved the issue.

Fixed S4810 9.14(1.12) Software Issues

| NOTE: Dell Networking OS 9.14(1.12) includes fixes for issues addressed in previous 9.14 releases. Refer to the respective release notes documentation for the list of issues fixed in earlier 9.14 releases. The following issues are fixed in Dell Networking OS version 9.14(1.12):

PR#169841

Severity:| Sev 2
Synopsis:| In certain scenarios, an MSDP learnt PIM TIB entry stays in registering state indefinitely.
Release Notes:| In certain scenarios, an MSDP learnt PIM TIB entry stays in registering state indefinitely.
Workaround:| Set the affected node as a non-designated router in the RPF neighbor interface.
PR#170240
Severity :| Sev 2
Synopsis:| AAA accounting request displays an incorrect calling station- id.
Release Notes:| AAA accounting request displays an incorrect calling station-id.
Workaround:| None
PR#170255
Severity :| Sev 2
Synopsis:| The switch encounters an exception when saving the configuration on VLT pair switches simultaneously.
Release Notes:| The switch encounters an exception when saving the configuration on VLT pair switches simultaneously.
Workaround:| None
PR#170301
Severity:| Sev 3
Synopsis:| The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli(CVE-2022-0778)
Release Notes:| The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli(CVE-2022-0778)
Workaround:| None

Known Issues

Known issues are reported using the following definitions.

running process that requires a restart of AFM, the router, switch, or process.
S2 — Critical: An issue that renders the system or a major feature unusable, which can have a pervasive impact on the system or network, and for which there is no work-around acceptable to the customer.
S3 — Major: An issue that affects the functionality of a major feature or negatively effects the network for which there exists a work-around that is acceptable to the customer.
S4 — Minor: A cosmetic issue or an issue in a minor feature with little or no network impact for which there might be a work-around.
Synopsis| Synopsis is the title or short description of the issue.
Release Notes| Release Notes description contains more detailed information about the issue.
Work around| Work around describes a mechanism for circumventing, avoiding, or recovering from the issue. It might not be a permanent solution.

Issues listed in the “Fixed Issues” section should not be present, and the work-around is unnecessary, as the version of code for which this release note is documented has resolved the issue.

Known S4810 9.14(1.12) Software Issues

The following issues are open in Dell Networking OS version 9.14(1.12):

None

S4810 Upgrade Procedures: Overview

To upgrade the Dell Networking OS to the latest version on a S4810 switch, complete these steps:

• Upgrading the S4810 Dell Networking OS Image and Boot Code
• Upgrading the CPLD
• VLT Upgrade Procedure

Upgrading the S4810 Dell Networking OS Image and Boot Code

The S4810 system is pre-loaded with default Dell Networking OS software.

| NOTE: Before upgrading Dell Networking OS on S4810 from a version prior to 8.3.12.0 to version 9.14(1.12), ensure to increase the partition size by upgrading to version 8.3.12.0.
| NOTE: If the upgrade image is greater than 32MB in size, switches running Dell Networking OS version prior to 9.1(0.0) do not support software upgrade using TFTP. Use FTP, SCP, FLASH, or NFSMOUNT instead. Dell Networking OS Version 9.1(0.0) introduced TFTP enhancements to support file transfers larger than 32MB.
| NOTE: If VLT configurations exist on a switch that runs Dell Networking OS version 9.2(0.0) or prior, ensure that all switches in the VLT domain are upgraded to version 9.3(0.0) before upgrading to version 9.14(1.12).
| NOTE: You can directly upgrade a switch that runs Dell Networking OS version 8.3.12.0 (or later) to version 9.14(1.12), if VLT configurations do not exist on that switch.

Bare Metal Provisioning

| NOTE: If you are using Bare Metal Provisioning (BMP), refer to the Bare Metal Provisioning chapter in the Dell Networking OS Configuration Guide or the Open Automation Guide.

Manual Upgrade Procedure

Follow these steps to upgrade your S4810 system:

1. Dell Technologies recommends that you back up your startup configuration and any important files and directories to an
   external media prior to upgrading the system.

2. Upgrade the Dell Networking OS in flash partition A: or B:

   upgrade system [flash: | ftp: | scp: | tftp:] [A: | B:] EXEC Privilege

   Dell#upgrade system ftp: a: Address or name of remote host []: 10.16.127.35 Source file name []: FTOS-SE-9.14.1.12.bin User name to login remote host: ftpuser Password to login remote host: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Erasing Sseries Primary Image, please wait ...................................................................................................................................................................................Writing......................................................................................................................................................... 44220292 bytes successfully copied System image upgrade completed successfully. Dell #

3. In case of a stack setup, upgrade the Dell Networking OS for the stacked units.

   upgrade system stack-unit [0-11 | all] [A: | B:] EXEC Privilege

If A: is specified in the command, the Dell Networking OS version present in Management unit’s A: partition will be pushed to the stack units. If B: is specified in the command, the Management unit’s B: will be pushed to the stack units. Upgrade of stack units can be done on individual units by specifying the unit id [0-11] or on all units by using all in the command.

    Dell#upgrade system stack-unit all A:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Image upgraded to all
Dell#  

4. Verify the Dell Networking OS has been upgraded correctly in the upgraded flash partition

   show boot system stack-unit [0-11 | all] EXEC PRIVILEGE

   Dell#show boot system stack-unit all Current system image information in the system:

   Type Boot Type A B

   Stack-unit 0 FLASH BOOT 9.14(1.12)[boot] 9.14(1.10) Stack-unit 1 FLASH BOOT 9.14(1.12)[boot] 9.14(1.10) Stack-unit 2 is not present. Stack-unit 3 is not present. Stack-unit 4 is not present. Stack-unit 5 is not present. Stack-unit 6 is not present. Stack-unit 7 is not present. Stack-unit 8 is not present. Stack-unit 9 is not present. Stack-unit 10 is not present. Stack-unit 11 is not present. Dell#

The Dell Networking OS versions present in A: and B: can be viewed for individual units by specifying the stack unit id [0-11] in the command or for all the stack units by specifying all in the command.

5. Verify the Dell Networking OS has been upgraded correctly in the upgraded flash partition

   show boot system stack-unit [0-11 | all] EXEC PRIVILEGE

   Dell#upgrade boot ftp: Address or name of remote host []: 10.16.127.35 Source file name []: U-boot.1.2.0.5.bin User name to login remote host: ftpuser Password to login remote host: ! Erasing SSeries BootImageUpgrade Table of Contents, please wait .!........Writing .................................! 524528 bytes successfully copied Dell#

The Dell Networking OS versions present in A: and B: can be viewed for individual units by specifying the stack unit id [0-11] in the command or for all the stack units by specifying all in the command.

6. In case of a stack setup, upgrade the S4810 Boot Code to the stack units.

   upgrade boot stack-unit [0-11 | all] EXEC Privilege

   Dell#upgrade boot stack-unit all !!!!!!!!!! Dell#

The S4810 Boot Code can be upgraded to individual units by specifying the stack unit ID [0-11] in the command or it can be upgraded on all stack units by specifying all in the command.

7. Change the Primary Boot Parameter of the S4810 to the upgraded partition A: or B:

   boot system stack-unit [0-11 | all] primary [system A: | system B: | tftp://URL] CONFIGURATION

8. Save the configuration so that the configuration will be retained after a reload using write memory command.

   write memory EXEC PRIVILEGE

   Dell#write memory ! Synchronizing data to peer Stack-unit !!!!!!!! Dell#

In case of a stack setup, the configuration will be saved in the Management as well as the Standby units.

9. Reload the unit

   reload EXEC PRIVILEGE

   Dell#reload Proceed with reload [confirm yes/no]: yes Mar 24 21:32:27: %STKUNIT0-M:CP %CHMGR-5-RELOAD: User request to reload the chassis syncing disks... done

10. Verify the S4810 has been upgraded to the Dell Networking OS version 9.14(1.12).

    show version EXEC PRIVILEGE

    Dell#show version Dell Real Time Operating System Software Dell Operating System Version: 2.0 Dell Application Software Version: 9.14(1.12) Copyright (c) 1999-2021 by Dell Inc. All Rights Reserved. Build Time: Thu Mar 24 16:58:02 2022 Build Path: /build/build02/SW/SRC Dell Networking OS uptime is 2 minute(s) System image file is "system://A" System Type: S4810 Control Processor: Freescale QorIQ P2020 with 2 Gbytes (2147483648 bytes) of memory, core(s) 1. 128M bytes of boot flash memory. 1 52-port GE/TE/FG (SE) 48 Ten GigabitEthernet/IEEE 802.3 interface(s) 4 Forty GigabitEthernet/IEEE 802.3 interface(s)

11. Verify the S4810 has been upgraded to the latest Boot Code

    show system stack-unit [0-11] EXEC PRIVILEGE

    Dell#show system stack-unit 0 -- Unit 0 -- Unit Type : Management Unit Status : online Next Boot : online Required Type : S4810 - 52-port GE/TE/FG (SE) Current Type : S4810 - 52-port GE/TE/FG (SE) Master priority : 0 Hardware Rev : 3.0 Num Ports : 64 Up Time : 2 min Dell Networking OS Version : 9.14(1.12) Jumbo Capable : yes POE Capable : no FIPS Mode : disabled Boot Flash : 1.2.0.5

SSH — SSH host keys are stored in NVRAM. Dell Networking OS regenerates them when Dell Networking OS applies the startup-config and the ip ssh server enable configuration. However, if the SSH client has “Strict Host Key” checking enabled, the SSH client denies access to the Dell Networking OS SSH server. To resolve this issue, you must modify the SSH client settings so that it uses the new key.

Upgrading the CPLD

The S4810 system with Dell Networking OS version 9.14(1.12) requires CPLD image 7.

Verify that a CPLD upgrade is required

Use the following command to identify the CPLD version loaded in the device:

Dell#show revision
-- Stack unit 0 --
S4810 SYSTEM CPLD : 7
NPU PCI DEVICE ID : 0xB845 (TRIDENT)
-- Stack unit 1 --
S4810 SYSTEM CPLD : 7 
NPU PCI DEVICE ID : 0xB845 (TRIDENT)
-- Stack unit 2 --
S4810 SYSTEM CPLD : 7
NPU PCI DEVICE ID : 0xB845 (TRIDENT)
Dell#  

Use the following command to view CPLD version that is associated with the Dell Networking OS image:

Dell#show os-version
RELEASE IMAGE INFORMATION :
-------------------------------------------------------------------------
Platform Version Size ReleaseTime
S-Series: SE 9.14(1.12) 44220292 Mar 24 2022 17:24:13
TARGET IMAGE INFORMATION :
-------------------------------------------------------------------------
Type Version Target checksum
runtime 9.14(1.12) Control Processor passed
CPLD IMAGE INFORMATION :
-------------------------------------------------------------------------
Card CPLD Name Version
Stack-unit 0 S4810 SYSTEM CPLD 7
Stack-unit 1 S4810 SYSTEM CPLD 7
Stack-unit 2 S4810 SYSTEM CPLD 7  

Upgrading the CPLD Image

| NOTE: The upgrade fpga-image stack-unit {0-11} booted command is hidden when using the FPGA Upgrade feature in the CLI. However, it is a supported command and will be accepted when entered as documented.

To upgrade the CPLD image on the S4810:

1. 1. Upgrade the CPLD image.

   upgrade fpga-image stack-unit [0-11] booted EXEC Privilege

   Dell# upgrade fpga-image stack-unit 0 booted Current information for the system:

   Card Device Name Current Version New Version

   Unit0 S4810 SYSTEM CPLD 7 7

   ---

   • Warning - Upgrading FPGA is inherently risky and should *
   • only be attempted when necessary. A failure at this upgrade may *
   • cause a board RMA. Proceed with caution ! *

     ---

     Upgrade image for stack-unit 0 [yes/no]: yes FPGA upgrade in progress!!! Please do NOT power off the unit!!! !!Mar 24 16:06:40: %S4810:0 %DOWNLOAD-6-FPGA_UPGRADE: stack-unit 0 fpga upgrade success. Upgrade result :

     Unit 0 FPGA upgrade successful Unit 0. will go for reboot to complete the upgrade. Dell#

2. Check whether the CPLD has been upgraded to the latest version.

   show revision EXEC PRIVILEGE

   Dell#show revision -- Stack unit 0 -- S4810 SYSTEM CPLD : 7 NPU PCI DEVICE ID : 0xB845 (TRIDENT) -- Stack unit 1 -- S4810 SYSTEM CPLD : 7 NPU PCI DEVICE ID : 0xB845 (TRIDENT) -- Stack unit 2 -- S4810 SYSTEM CPLD : 7 NPU PCI DEVICE ID : 0xB845 (TRIDENT) Dell#

VLT Upgrade Procedure

To upgrade the Dell Networking OS in a VLT setup from version 9.2(0.0) to the latest version, upgrade Dell Networking OS to version 9.3(0.0) first and then to the newer version. If you are already running Dell Networking OS version 9.3(0.0) or later, you can directly upgrade the Dell Networking OS to the latest version. To upgrade the Dell Networking OS, on systems running VLT, perform the following steps:

1. Upgrade the system-flash partition A or B with the new image on both VLT peers. On both the VLT peers, set Primary boot parameter to boot the system from upgraded system flash partition [A or B].You can enter one of the following options: flash — Copies from flash file system (flash://filepath). ftp — Copies from remote file system (ftp://userid:password@hostip// filepath). scp — Copies from remote file system (scp://userid:password@hostip//filepath). tftp — Copies from remote file system (tftp://hostip/filepath).

   upgrade system [flash: | ftp: | scp: | tftp: | usbflash:] [A: | B:] EXEC Privilege

2. Reload or power-cycle one of the VLT peers (For Example, Peer 2).

   | reload or power cycle

3. Wait for Peer 2 to come up; VLT adjacency will be established. (Peer 2 – new image and Peer 1 – old image).
   NOTE : Between software versions 8.3.10.0 & 9.4P1 both VLT peers are running different VLT versions, a VLT peering
   will not established.

4. Wait for the Peer 2 to bring up all VLT LAG ports. Use the command show vlt detail to confirm all VLT ports in the
   local chassis are active.

   show vlt detail

EXEC Privilege

5. Following upgrade, use the write memory command to save the running-config to memory.

   write memory EXEC Privilege

6. Ensure both the nodes are now forwarding traffic.
   NOTE:

   • When you upgrade VLT nodes from 8.3.12, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, and 9.10 to 9.14(1.12), forwarding traffic is not affected.
   • If you upgrade VLT nodes from 8.3.10.0 to 9.x.x.x, layer 2 switched packets are flooded until all MAC addresses are learned. Layer 3 routed packets are dropped until all ARP entries are resolved and routes are learned due to version mismatch.
     Layer 2 switched packets will be flooded until all MACs are learned and Layer 3 routed packets will be dropped until all ARPs are resolved and routes are learned due to version mismatch.

7. When all VLT ports are active on the Peer 2, repeat steps 2 through 5 for the Peer 1.

| NOTE: After upgrading to the latest Dell Networking OS version, upgrade the CPLD if required

Support Resources

The following support resources are available for the S4810 system.

This document contains operational information specific to the S4810 system.
For information about using the S4810, refer to the following documents at http://www.dell.com/support:

• Installing the S4810 System
• Quick Start Guide
• Dell Networking Command Line Reference Guide for the S4810 System
• Dell Networking Configuration Guide for the S4810 System

For more information about hardware features and capabilities, refer to the Dell Networking website at https://www.dell.com/ networking.

Issues

Issues are unexpected or incorrect behavior and are listed in order of Problem Report (PR) number within the appropriate sections.

Finding Documentation

This document contains operational information specific to the S4810 system.

• For information about using the S4810, refer to the documents at http://www.dell.com/support.
• For more information about hardware features and capabilities, refer to the Dell Networking website at https://www.dell.com/networking.

Contacting Dell Technologies

| NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog.

Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell Technologies for sales, technical support, or customer service issues:

Go to www.dell.com/support.

Notes, cautions, and warnings

| NOTE: A NOTE indicates important information that helps you make better use of your product.
| CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
| WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

© 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

References

• Computers, Monitors & Technology Solutions | Dell USA
• Support | Dell US
• Dell Networking Solutions | Dell USA

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