What port configuration does the Dell KRDGF S4128F-ON provide?

The switch features 28x 10Gb SFP+ ports for 1/10GBASE fiber or DAC connectivity to servers/storage, plus 2x 100Gb QSFP28 uplinks supporting breakout to 4x25G or direct high-speed spine links. This enables flexible 10G access with 100G aggregation for non-blocking ToR performance.

Does the S4128F-ON support Layer 3 routing features?

Yes, as a Layer 2/3 switch, it supports VLANs, static/dynamic routing (OSPF/BGP), ACLs, and QoS for efficient traffic management in enterprise and data center networks. Console management allows full L3 configuration without expansion modules.

What power and redundancy options are available?

Equipped with 2x 550W hot-swappable PSUs for 1+1 redundancy, ensuring no single point of failure. No PoE support focuses power on high-throughput switching; energy-efficient design suits dense 1U deployments.

Is the KRDGF suitable for data center ToR deployments?

Ideal for ToR with 28x10G downlinks to servers/NICs and 100G uplinks to spine, offering low-latency cut-through switching in 1U form with rack rails and normal airflow for hot aisle containment.

What management interfaces does it include?

Console port for CLI-based management via SSH/Telnet; supports standard Dell OSN/OS10 for scripting, SNMP, and monitoring. No out-of-band management port listed, but integrates with DCIM tools.

What are the physical dimensions and mounting options?

1U rack-mountable chassis (standard 19-inch width) includes rack rails for easy installation. Normal IO-to-PSU airflow optimizes cooling; hot-swap fans/PSUs minimize downtime during maintenance.

KRDGF - Dell S4128F-ON Switch

Name: KRDGF - Dell S4128F-ON Switch
Brand: Dell
SKU: KRDGF
Price: 2025 USD
Availability: InStock

KRDGF - Dell S4128F-ON Switch | US IT Hardware

Product overview

The Dell Networking S4128F-ON (part KRDGF) is a high-density 1U Layer 2 and Layer 3 switch optimized for data center top-of-rack (ToR) and enterprise aggregation deployments. It provides 28 ports of 10Gbps SFP+ for high-speed server and storage connectivity, plus 2x 100Gb QSFP28 uplinks for spine-layer integration, enabling non-blocking wire-speed performance in bandwidth-intensive environments. Dual 550W hot-swappable power supplies ensure high availability with redundancy, while normal IO-to-PSU airflow maintains optimal thermal management in dense racks. Console-based management supports efficient configuration, monitoring, and troubleshooting. Lacking PoE, it focuses on pure high-throughput switching for low-latency applications like cloud computing, virtualization, and HPC. This S-series switch excels in scalable fabrics, offering robust routing, VLAN support, and security features for mission-critical networks demanding reliability and performance.

28x 10Gb SFP+ ports enable high-speed server connectivity.
2x 100Gb QSFP28 uplinks support spine-layer aggregation.
Dual 550W hot-swap PSUs provide power redundancy.
Layer 2/3 switching handles complex routing and VLANs.
1U rack form factor optimizes data center space usage.
Normal airflow ensures reliable cooling in dense racks.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	KRDGF
Brand	Dell
Condition	Refurbished
PoE	Not Supported
Layer	Layer 2 & 3
Model	S4128F-ON
Product Line	S-Series
Product Type	Networking Switch

Network & Communication

Switching Capacity
Forwarding Mode	Cut-Through

Compatible systems

Optimized for Dell PowerEdge ecosystems; ONIE-enabled for multi-OS flexibility.

Dell PowerEdge
Model: R-series
Form factor: 1U/2U Rack
Generation: 14G+
Direct 10G SFP+ to CNA/NIC; 100G QSFP28 to fabric extender.

Best for

Data Center Top-of-Rack
High-density 10G server connectivity with 100G uplinks for east-west traffic in scale-out clusters.
Enterprise Aggregation
Layer 3 routing backbone linking access switches to core with redundant power for uptime.
Cloud Networking
Non-blocking 10Gbps fabric for virtualized workloads and NFV deployments requiring low latency.
HPC Environments
High-throughput SFP+ ports for compute node interconnects in parallel processing clusters.
Storage Fabrics
10G/100G links for SAN/NAS replication and high-IOPS data movement in enterprise storage.
Spine Layer
100Gb QSFP28 uplinks scaling leaf-spine architectures for massive data center throughput.

Details

Shipping, warranty & returns

Customer reviews

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Form Factor	1U Rack-Mount
Chassis Type	Fixed Configuration
Rack Mounting	Includes Rack Rails

Airflow	Normal (IO to PSU)
Operating Environment	Data Center Standard

Ports	28 x 10Gb SFP+ (1/10GBASE), 2 x 100Gb QSFP28
Management	Console Port (CLI)
Expansion Slots	None

Dell S4128F-ON Switch

Product overview

Featuring

Network & Communication

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions