Dell Networking Dell PowerSwitch S4128T-ON

Name: PowerSwitch S4128T-ON
Brand: Dell
SKU: powerswitch-s4128t-on

Dense, high-capacity, top-of-rack and aggregation switches for spine and leaf data center architectures.

AccessRJ45 MixBalanced

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SKU: powerswitch-s4128t-on

Ports: 28x 10 G BASE-T, 2x 100 GbE QSFP28
Capacity: 960 Gbps
NPU: Broadcom Maverick

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Overview of Data Center Switches

Dense, high-capacity, top-of-rack and aggregation switches for spine and leaf data center architectures.

Copper twisted pair models with high-speed connectivity for versatile enterprise applications.

Best For:

Small data centers & edge deployments
Basic network expansion
Light virtualization environments

Scalable networking for the data center

Optimize your network with flexible, scalable, and high-performance data center switches. Designed for modern workloads, PowerSwitch aggregation and top-of-rack (ToR) switches deliver reliable and agile spine and leaf data center architectures, and enable seamless migration to software-defined data centers.

Overview of PowerSwitch S4128T-ON

PowerSwitch S4128T-ON Key Specifications

Built for smaller environments that need reliable connectivity without overbuilding, this switch supports basic workloads and network expansion with efficient performance.

NPU

Broadcom Maverick

Switch Capacity

960 Gbps

Forwarding

720 Mpps

Ports

28x 10 G BASE-T, 2x 100 GbE QSFP28

Not sure if this is the right model?

If you're comparing PowerSwitch S4128T-ON vs PowerSwitch S4112T-ON — Choose this if you need reliable connectivity for smaller environments without overbuilding for enterprise-scale workloads.

View full comparison

Features

Select hardware and software independently with our open standards-based switches, eliminating vendor lock-in for ultimate scalability.

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Flexible, open networking

Select hardware and software independently with our open standards-based switches, eliminating vendor lock-in for ultimate scalability.

Extreme performance

Accelerate workloads with line-rate throughput, low latency, and intelligent data center fabrics designed to handle demanding environments.

Simple management

Simplify deployment and lifecycle management with intuitive tools including Enterprise SONiC Distribution by Dell Technologies.

Efficient operation

Optimize power and cooling with compact 1U and 2U PowerSwitch models. Dell Smart Fabric Services automates management, reducing energy waste and cooling costs.

Common Mistakes When Choosing a Data Center Switch

Choosing based on specs instead of workload
Fix: Start with your environment. If you're running basic networking or edge workloads, focus on reliability and manageability over raw throughput.
Also consider: PowerSwitch S4112T-ON
Underbuilding when planning for high-density workloads
Fix: If cloud, virtualization, or high-bandwidth workloads are on the roadmap, plan for the throughput requirements now.
Consider: PowerSwitch S4348T-ON, PowerSwitch S4148T-ON
Not planning for future growth
Fix: Choose a model that allows for expansion without replacing your core switch.
Consider upgrading to: PowerSwitch S4348T-ON, PowerSwitch S4148T-ON

Technical Details

Hardware Specifications

Complete technical specifications for the PowerSwitch S4128T-ON.

PERFORMANCE

NPUBroadcom Maverick

Switch Capacity960 Gbps

Forwarding Capacity720 Mpps

Latency<800 μs

CONNECTIVITY

Ports28x 10 G BASE-T, 2x 100 GbE QSFP28

Buffer Size12 MB

For full specifications, please reference the datasheet (PDF).

Frequently Asked Questions

Expand All | Collapse All

Dell's data center switches are high-performance network switches designed for modern data centers. They provide the foundation for scalable, automated, and secure networking, helping you handle demanding workloads and drive business innovation.

Dell PowerSwitch delivers high-density, low-latency connectivity from 1GbE to 800GbE to eliminate network bottlenecks. Their open, standards-based architecture supports massive fabric scaling and seamless integration, ensuring your infrastructure can grow efficiently with your business demands.

The "-ON" (Open Networking) suffix indicates that the switch supports a choice of third-party operating systems, giving you the flexibility to build a network that fits your specific operational model.

The PowerSwitch Z-Series, particularly the Z9864F-ON, is engineered for high-performance data center spines and super-spines. It offers industry-leading 800GbE density and throughput to support the most demanding cloud, AI/ML, and large-scale enterprise workloads.

Dell PowerSwitch Layer 3 switches provide advanced routing capabilities to direct traffic efficiently across different network segments, which is critical for modern data center design. Many models in the S-Series offer flexible SFP+ ports for high-speed 10GbE fiber connectivity.

Yes, the Dell PowerSwitch E-Series includes multi-gigabit switches with 48-port configurations that support high-power PoE. These switches are ideal for powering devices like wireless access points, IP cameras, and VoIP phones.

A Top-of-Rack switch connects servers and storage within a single rack to the broader data center network, simplifying cabling and improving performance. The Dell PowerSwitch S- and Z-Series offers a range of 1 to 800 GbE switches that are perfectly suited for Top-of-Rack deployments, providing high-density connectivity and low latency.

Dell's data center switches like PowerSwitch provide the high-bandwidth, low-latency fabric essential for large data transfers in AI training and inference workloads. With support for up to 800GbE and advanced features, they ensure your network can keep pace with accelerated computing and storage.

Dell PowerSwitch incorporates a multi-layered security approach, including features like port security, access control lists (ACLs), Hardware Root of Trust features, Secure Boot, Trusted Platform Module TPM 2.0 and authentication protocols to safeguard your network. Open Networking models also support advanced security software to help you build a Zero Trust-ready architecture.

Yes, PowerSwitch is designed for modern, automated environments and support a wide range of management tools. They offer standard CLI, REST APIs, and support for automation frameworks like Ansible, allowing for seamless integration into your existing DevOps and NetOps workflows. They also offer SmartFabric Manager for SONiC, enabling simplified deployment, orchestration, monitoring and life cycle management of SONiC fabrics through a single pane of glass.

Product Comparison

Compare Copper

See how the PowerSwitch S4128T-ON stacks up against other models in the lineup.

Model

NPU

Capacity

Ports

PowerSwitch S4348T-ON

Broadcom Trident3-X5

2160 Gbps

48x 10 G BASE-T 6x 100 GbE QSFP28

PowerSwitch S4148T-ON

Broadcom Maverick

1760 Gbps

48x 10 G BASE-T, 2x QSFP+, 4x 100 GbE QSFP28

PowerSwitch S4128T-ON Current

Broadcom Maverick

960 Gbps

28x 10 G BASE-T, 2x 100 GbE QSFP28

PowerSwitch S4112T-ON

Broadcom Maverick

840 Gbps

12x 10 G BASE-T, 3x 100 GbE QSFP28

Fiber

Dense, high-capacity, top-of-rack and aggregation switches for spine and leaf data center architectures.

Explore Fiber

Out-of-Band Management

Dedicated switches for management, orchestration, and troubleshooting of production infrastructure.

Explore Out-of-Band Management

Downloads

Documentation & Resources

Access datasheets and technical resources for the PowerSwitch S4128T-ON.

Hardware Spec Sheet

Complete hardware specifications, port configurations, and performance data.

Download PDF

Quick Reference Guide

A high-level architecture guide covering best practices for spine-and-leaf deployments.

Download Guide

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Related Models

Also Consider

PowerSwitch S4112T-ON

Access Compact RJ45 Small Deploy

NPU: Broadcom Maverick
Capacity: 840 Gbps
Ports: 12x 10 G BASE-T, 3x 100 GbE QSFP28

Get a Quote More Details

PowerSwitch S4348T-ON

Access RJ45 (10GBase-T) High Density

NPU: Broadcom Trident3-X5
Capacity: 2160 Gbps
Ports: 48x 10 G BASE-T 6x 100 GbE QSFP28

Get a Quote More Details

PowerSwitch S4148T-ON

Access RJ45 (10GBase-T) Standard

NPU: Broadcom Maverick
Capacity: 1760 Gbps
Ports: 48x 10 G BASE-T, 2x QSFP+, 4x 100 GbE QSFP28

Get a Quote More Details

Dell Networking Dell PowerSwitch S4128T-ON

Dense, high-capacity, top-of-rack and aggregation switches for spine and leaf data center architectures.

Scalable networking for the data center

PowerSwitch S4128T-ON Key Specifications

Not sure if this is the right model?

Common Mistakes When Choosing a Data Center Switch

Hardware Specifications

PERFORMANCE

CONNECTIVITY

Frequently Asked Questions

What are data center switches?

How do Dell PowerSwitch solutions enhance data center performance and scalability?

What is the difference between Dell PowerSwitch models with and without the "-ON" suffix?

Which Dell PowerSwitch series is best for high-density 800GbE data center fabrics?

What are Dell PowerSwitch Layer 3 switches, and which models include SFP+ ports?

Does the Dell PowerSwitch portfolio include 48-port Power over Ethernet (PoE) switches?

What is the role of a Top-of-Rack switch?

How do Dell data center switches support modern workloads like AI and machine learning?

What security features are built into Dell PowerSwitch data center switches?

Can Dell PowerSwitch switches be managed with existing network automation tools?

Compare Copper

Fiber

Out-of-Band Management

Documentation & Resources

Also Consider

PowerSwitch S4112T-ON

PowerSwitch S4348T-ON

PowerSwitch S4148T-ON