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Handles dense 10G environments easily. Uplinks provide excellent bandwidth.
S4148T-ON
Dell Networking S4148T-ON, 1U, 48x10Gbase-T, 4xQ28, 2xQSFP +...
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S4148T-ON
Dell Networking S4148T-ON, 1U, 48x10Gbase-T, 4xQ28, 2xQSFP +...
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S4148T-ON is a high-performance switch built with a modular architecture that maximizes throughput and minimizes latency for critical network environments. It offers flexible power options with both redundant power supply and standard AC input, a comprehensive mix of Ethernet and SFP uplink ports, and native stacking support to enhance network scalability and resilience.
Overview of S4148T-ON: Designed for demanding deployments, this rack-mount switch delivers optimized performance through advanced switching technology and integrated stacking capabilities. Its robust design and varied port configurations make it ideal for use in enterprise campuses, data centers, and other high-density network scenarios where reliability and scalability are paramount.
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Request bulk order quote for S4148T-ON for additional pricing. Browse the full Dell Networking S4100-On Switches series or explore all Dell products.
In a mid-sized cloud service provider environment experiencing exponential growth in virtualized workloads, IT teams deployed the Dell Networking S4148T-ON (1U, 48x10Gbase-T, 4x25GbE Q28, 2xQSFP+, dual PSU) running OS10 as leaf switches in a spine-leaf fabric. By leveraging its high-density 10GbE server connectivity and 25GbE uplinks, the S4148T-ON delivers sub-microsecond latency and non-blocking throughput for HPC and AI/ML training clusters. The result is a 40% reduction in north-south latency, seamless network scaling to 1,024 servers, and a 30% reduction in power and rack-space footprint compared to legacy 1GbE/10GbE switches.
A multinational enterprise with distributed regional offices needed a resilient, high-capacity aggregation layer to consolidate 10GbE campus distribution switches and secure SD-WAN tunnels. Deploying the S4148T-ON (1U, 48x10Gbase-T) at each PoP enabled 48 simultaneous 10GbE edge links to access switches, plus 4x25GbE Q28 and 2x40GbE QSFP+ uplinks into the corporate core. OS10’s native EVPN-VXLAN overlays and automated policy enforcement provided zero-touch provisioning and micro-segmentation, resulting in a 60% faster branch rollout, 99.999% network availability, and a 25% reduction in operational overhead.
A financial services firm required deterministic connectivity between its on-premises datacenter and multiple hyperscale cloud regions for real-time trading data. By positioning the Dell Networking S4148T-ON (48x10Gbase-T, 4xQ28, 2xQSFP+) as the hybrid cloud gateway, they established high-bandwidth 10GbE links to on-prem servers and 40GbE uplinks to cloud-on-ramp routers. OS10’s integrated network automation and RESTful APIs streamlined BGP-EVPN route exchange and clock-synchronized failover. The deployment achieved sub-5ms end-to-end latency, 1.2Tbps aggregate throughput, and eliminated manual configuration errors, accelerating time-to-market for new trading applications by 50%.
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 S4148T-ON |  S4128F |  S4112F-ON |  S4112T-ON |  S4148F | |
|---|---|---|---|---|---|
| Depth | 18 inches | 18 inches | N/A | 14 inches | 28 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1 inches | 1.75 inches | N/A | 1.75 inches | 1.75 inches |
| IOS | IP Services | LAN Base | IP Services | LAN Base | LAN Base |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | S4148T-ON | S4128F | S4112F-ON | S4112T-ON | S4148F |
| Media Type Supported | Combo | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo | Twisted Pair | Twisted Pair / Fiber / Combo |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 12–24 Ports | 12 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 24–48 Ports |
| POE Support | Non POE | POE+ | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48 Ethernet ports with 4 SFP uplink slots | 24 x 10/100/1000 Ethernet ports, 4 x 10G SFP+ uplink ports | N/A | N/A | 48 Ethernet ports with 4 dedicated SFP uplink ports |
| Power Consumption | 150 W | 150 W | N/A | N/A | 200 W |
| Power Source | Redundant Power Supply / AC Power Supply | Redundant Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | S4148T-ON | S4128F High-Performance Rack-Mount Switch | S4112F-ON High Performance Modular Switch | S4112T-ON Managed Stackable Switch | S4148F High-Performance Data Center Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | No | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 256 Gbps | 320 Gbps | N/A | 64 Gbps | 320 Gbps |
| Switching Capacity with Stacking | 512 Gbps | 640 Gbps | N/A | 128 Gbps | 640 Gbps |
| Uplink Configuration | 10G | 10G | 1G / 10G / 40G | 1G | 10G |
| Weight | 15 lbs | 15 lbs | N/A | 15 lbs | 20 lbs |
| Width | 17 inches | 17.5 inches | N/A | 17.5 inches | 17 inches |
Handles dense 10G environments easily. Uplinks provide excellent bandwidth.
Stable under heavy east west traffic.
Good choice for large data halls.
Consistent OS10 performance.
Meets enterprise expectations.
The Dell Networking S4148T-ON is a 1U top-of-rack switch offering 48×10GBase-T, 4×QSFP28 (100GbE), 2×QSFP+ (40GbE), dual hot-swappable PSUs, and Dell OS10 for high-density data center deployments.
The S4148T-ON provides 48 10GBase-T copper ports, 4 QSFP28 ports for 100GbE uplinks, and 2 QSFP+ ports for 40GbE uplinks, delivering flexible high-speed connectivity.
Yes. It includes 4 QSFP28 ports for 100GbE uplinks and 2 QSFP+ ports for 40GbE uplinks, enabling high-bandwidth spine-leaf network architectures.
The switch runs Dell OS10, a modular, Linux-based open networking OS that delivers advanced automation, programmability, and comprehensive layer-2/3 features.