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S4048-ON
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48x 10GbE SFP+ and 6x 40GbE QSFP+ ports, IO to PSU, 1x AC P...
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S4048-ON
- Description:
- 48x 10GbE SFP+ and 6x 40GbE QSFP+ ports, IO to PSU, 1x AC PSUs_x005F_x000D_
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S4048-ON Overview
S4048-ON is a high-performance, scalable switch designed with a robust architecture that supports both Layer 2 and Layer 3 operations, making it ideal for dynamic enterprise and data center networks. It provides flexible power options using a standard AC power supply, and its comprehensive port configuration includes 48 Ethernet ports and dedicated SFP uplink ports to accommodate both copper and fiber media.
Engineered for excellent stacking capabilities and rack-mount deployment in 1 RU form factor, the S4048-ON delivers dependable performance with low latency and efficient packet switching. Its versatile design, featuring non-POE interfaces and a manageable operating system with IP Lite capabilities, makes it well-suited for campus connectivity, aggregation, and cloud-based application scenarios.
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Request bulk order quote for S4048-ON for additional pricing. Browse the full Dell Networking S4048-On Switches series or explore all Dell products.
S4048-ON Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair / Fiber
- Redundant Power Supply Supported
- No
- Manufacturer Part Number
- S4048-ON
- Uplink Configuration
- 10G
- IOS
- IP Lite
- POE Support
- Non POE
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- N/A
- Flash Memory
- 256 MB
- Switching Capacity
- 176 Gbps
- Switching Capacity with Stacking
- N/A
- Product Name
- Dell Networking S4048-ON
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 12 inches
- Weight
- 18 lbs
S4048-ON Use Case
Hyperscale Data Center Leaf–Spine Fabric
In a cloud service provider’s East-West traffic environment, the S4048-ON (48×10GbE SFP+ and 6×40GbE QSFP+) acts as a leaf switch aggregating 48 hyper-converged servers over 10GbE SFP+ with six 40GbE QSFP+ uplinks to spine switches. The result is a non-blocking, low-latency fabric that scales to thousands of VMs while delivering sub-microsecond latency, streamlining multi-tenant operations and accelerating VM migration by 40 %.
High-Performance Storage Area Network (SAN) Aggregation
A global financial institution consolidates its iSCSI and NVMe-over-TCP storage traffic using the S4048-ON’s 48×10GbE SFP+ ports for server connections and 6×40GbE QSFP+ ports for top-of-rack uplinks to its storage array. This configuration achieves 3 × throughput improvement, reduces storage-access latency by 60 %, and simplifies PSU management with the integrated IO-to-PSU design and single AC power supply.
Enterprise Campus Core and Data Aggregation
A multinational corporate campus deploys the S4048-ON as its core switch, terminating 48 building edge switches on 10GbE SFP+ and linking two data halls via 40GbE QSFP+ trunks. The high-density 10GbE ports reduce cabling complexity by 50 %, while the dual-rated AC PSU ensures uninterrupted power. Outcome: unified campus connectivity with 99.999 % availability and 75 % fewer distribution hops.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| S4048-ON |  S4048T-ON |  S4048 1 Year NBD |  S4048 3 Years * 4h | |
|---|---|---|---|---|
| Depth | 12 inches | 17 inches | 12 inches | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | N/A |
| IOS | IP Lite | IP Services | LAN Lite | LAN Base |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | S4048-ON | S4048T-ON | S4048 1 Year NBD | S4048 3 Years * 4h |
| Media Type Supported | Twisted Pair / Fiber | Twisted Pair | Twisted Pair / Fiber | Combo |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 8 Ports | 8 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | 48×10/100/1000 RJ45 ports, 4×10G SFP+ uplink ports | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 10G SFP+ uplink ports | N/A |
| Power Consumption | N/A | N/A | 150 W | N/A |
| Power Source | AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | Dell Networking S4048-ON | Dell Networking S4048T-ON | S4048 1 Year NBD Switch | S4048 3 Years * 4h |
| Product Type | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | Yes | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 176 Gbps | 176 Gbps | 256 Gbps | 128 Gbps |
| Switching Capacity with Stacking | N/A | 352 Gbps | 512 Gbps | 256 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G |
| Weight | 18 lbs | 23 lbs | 15 lbs | N/A |
| Width | 17.5 inches | 19 inches | 17.5 inches | N/A |
Reviews & Ratings
R
Rashid Mehmood
5
Stable OS9 and reliable throughput.
T
Teemu Koskinen
4
Good data center switch choice.
A
Alan Whitaker
4
Handles high traffic efficiently.
F
Fahim Ullah
5
No unexpected downtime.
Questions & Answers
What are the key port configurations of the S4048-ON switch?
The S4048-ON features 48 10GbE SFP+ ports and 6 40GbE QSFP+ ports, delivering high-density, low-latency connectivity for data centers and enterprise networks.
What is the maximum switching capacity of the S4048-ON?
The S4048-ON provides up to 1.44 Tbps of switching capacity and 960 Mpps forwarding performance to support bandwidth-intensive applications.
Which power supply options are available for the S4048-ON?
The S4048-ON comes with a single AC hot-swappable power supply and supports an optional redundant AC PSU for increased uptime.
How is the S4048-ON managed?
You can manage the S4048-ON via a built-in CLI, RESTful API, SNMP, Netconf, and Ansible integration for automated provisioning and real-time monitoring.
Is the S4048-ON compatible with open networking OS?
Yes, the S4048-ON supports major open-network operating systems including Cumulus Linux, SONiC, and Pluribus for maximum deployment flexibility.
What redundancy features does the S4048-ON offer?
The S4048-ON supports redundant AC PSUs, hot-swap fans, and MLAG for device-level and link-level resilience, ensuring seamless failover.
What cooling and noise specifications apply to the S4048-ON?
The switch uses front-to-back, variable-speed fans optimized for data-center airflows, with maximum noise levels under 65 dBA in typical operating conditions.
What are the physical dimensions and weight of the S4048-ON?
The S4048-ON measures 17.2” W x 20.5” D x 1.7” H (1RU) and weighs approximately 12.8 lbs (5.8 kg) fully loaded with PSU.
Which multicast and layer-2/3 features are supported?
It supports advanced L2 features (VLAN, STP, MLAG) and L3 capabilities (OSPF, BGP, VRF, ECMP) plus IGMP/MLD snooping for efficient traffic management.
What environmental ratings does the S4048-ON meet?
The S4048-ON complies with NEBS GR-63/GR-1089 and ETSI standards, operating between 0°C to 40°C and 5% to 95% non-condensing humidity.
How do I integrate S4048-ON into a spine-leaf architecture?
Use the 40GbE QSFP+ uplinks as spine links and the 10GbE SFP+ ports as leaf connections to build a low-latency, non-blocking fabric.
What power consumption should I expect?
Under full load, the S4048-ON consumes approximately 200W to 240W with one AC PSU installed, depending on port activity.
Does the S4048-ON support Quality of Service (QoS)?
Yes, it offers 8 priority queues per port, DiffServ (DSCP) marking, strict and weighted round-robin scheduling for end-to-end traffic prioritization.
What warranty and support options are available?
The S4048-ON comes with a one-year limited hardware warranty; extended warranties and 24x7 support contracts are available for purchase.
Can I hot-swap components on the S4048-ON?
Yes, both the AC power supply and fan tray modules are hot-swappable, allowing maintenance without network downtime.
How do I order optics and transceivers for the S4048-ON?
The switch supports SFP+ and QSFP+ modules certified to 10GbE and 40GbE IEEE standards; order through our compatible optics catalog or third-party vendors.