210-ALSX - Dell EMC PowerSwitch S4128F-ON 28-Port Switch

Dell EMC 210-ALSX S4128F-ON is a 1U Layer 2/3 switch with 28x 10GbE SFP+ ports and 2x 100GbE QSFP28 uplinks, dual redundant PSUs, and OS10 support.

The Dell EMC 210-ALSX is the part number identifying a Dell PowerSwitch S4128F-ON, a 1U rack-mountable, open networking Layer 2/3 Ethernet switch built for top-of-rack data center and enterprise deployments. It provides 28 fixed 10GbE SFP+ ports alongside 2 fixed 100GbE QSFP28 uplink ports, delivering a non-blocking 960 Gbps switching fabric with a 720 Mpps forwarding rate and approximately 800 nanoseconds of latency. The switch ships with dual hot-swappable AC power supplies and redundant fan modules for high availability, and is built on Dell's Open Networking Install Environment (ONIE), allowing installation of Dell SmartFabric OS10 or supported third-party network operating systems. It supports advanced Layer 3 routing, VXLAN overlay networking, and extensive ACL/security capabilities, making it well suited for enterprise, midmarket, and cloud provider top-of-rack switching roles where high-density 10GbE server connectivity with 100GbE uplinks is required.

• 28x 10GbE SFP+ ports for high-density server connectivity
• 2x 100GbE QSFP28 ports for high-speed network uplinks
• 960 Gbps non-blocking, cut-through switching fabric
• 720 Mpps forwarding rate for high packet throughput
• Ultra-low latency of approximately 800 nanoseconds
• Dual redundant, hot-swappable AC power supplies
• Redundant hot-swappable fan modules for cooling reliability
• Open Network Install Environment (ONIE) for flexible OS deployment
• Supports Dell SmartFabric OS10 or third-party NOS
• Layer 3 routing including OSPF, BGP-4, and VXLAN overlay support
• Advanced security via ACLs and SSH encryption
• Compact 1U rack-mountable form factor

Designed for high-performance top-of-rack switching in modern data center and enterprise network environments.

• Top-of-rack switching for enterprise data centers
• High-density 10GbE server aggregation with 100GbE uplinks
• Cloud service provider network fabric deployments
• VXLAN-based virtualized overlay networking
• Layer 3 routing for campus or data center core segments
• Network refresh projects replacing legacy 10GbE switches
• Disaggregated open networking deployments using third-party NOS

• High-density 10GbE and 100GbE connectivity
• Non-blocking 960 Gbps switching performance
• Low-latency packet forwarding for demanding workloads
• Redundant power and cooling for high availability
• Flexible OS choice via ONIE open networking
• Advanced Layer 3 and VXLAN feature support

• Form Factor: 1U rack-mountable
• Dimensions (W x D x H): 434 x 460 x 43.5 mm (17.1 x 18.1 x 1.71 in)
• Airflow: Front-to-Back (I/O to PSU) airflow configuration

Per available documentation, this switch is part of and compatible with the following Dell PowerSwitch S-Series ecosystem:

• Dell PowerSwitch S4128T-ON
• Dell PowerSwitch S4148F-ON
• Dell PowerSwitch S4148FE-ON
• Dell PowerSwitch S4148T-ON
• Dell PowerSwitch S4148U-ON
• Dell PowerSwitch S4048-ON
• Dell PowerSwitch S4048T-ON
• Dell SmartFabric OS10 Enterprise Edition
• Standard 10GbE SFP+ and 100GbE QSFP28 optical transceivers
• ONIE-compatible third-party network operating systems

Note: Fan module and PSU airflow direction (front-to-back vs. reverse) must match across the chassis and is model/SKU dependent; verify airflow orientation before mixing accessories.

• Dell PowerSwitch S4128F-ON switch unit
• 2x pre-installed hot-swappable AC power supply units
• Pre-installed fan modules
• Basic documentation/quick start guide

Q: What is the Dell 210-ALSX part number?

A: 210-ALSX is a Dell manufacturer part number identifying the Dell EMC PowerSwitch S4128F-ON, a 28-port 10GbE Layer 2/3 managed switch with dual power supplies.

Q: How many ports does the 210-ALSX switch have?

A: It has 28 fixed 10GbE SFP+ ports plus 2 fixed 100GbE QSFP28 uplink ports for high-speed connectivity.

Q: What is the switching capacity of the S4128F-ON (210-ALSX)?

A: The switch delivers a non-blocking switching capacity of 960 Gbps with a forwarding rate of 720 Mpps.

Q: Does the 210-ALSX support Power over Ethernet (PoE)?

A: No, this switch model does not support PoE.

Q: What operating system does the 210-ALSX run?

A: It uses Dell's Open Network Install Environment (ONIE) and typically runs Dell SmartFabric OS10, though third-party NOS options are also supported.

Q: What is the rack form factor and airflow direction for 210-ALSX?

A: It is a 1U rack-mountable switch, and the 210-ALSX configuration uses front-to-back (I/O to PSU) airflow according to distributor specification listings.

Q: Does Dell publish an MTBF figure for this switch?

A: No, according to Dell's official community support forum, MTBF numbers are not published for the S4128 switch series.

Q: What redundancy features does the 210-ALSX include?

A: It includes 2 hot-swappable, redundant AC power supplies and redundant fan modules for high availability.