Dell PowerSwitch S4148U-ON
The Dell PowerSwitch S4148U-ON is a unified 1U top-of-rack storage networking switch featuring 24 unified SFP+ ports capable of running native 16Gb/8Gb Fibre Channel or 10GbE optical Ethernet, alongside 24 dedicated 10GbE ports and 100GbE uplinks. Designed for converged SAN/LAN infrastructure, the S4148U-ON eliminates separate FC and Ethernet access switches in mid-sized data centers.
Also written as: PowerSwitch S4148U-ON, Dell S4148U-ON, S4148U Unified FC/Ethernet Switch
Specifications
| Brand | Dell |
|---|---|
| Family | PowerSwitch S-Series |
| Form factor | 1U switch |
| Released | Jun 2017 |
| Port configuration | 24x unified SFP+ ports (supporting 16Gb/8Gb FC or 10GbE) + 24x 10GbE SFP+ + 4x 100GbE QSFP28 + 2x 40GbE QSFP+ |
| Switching capacity | 1.76 Tbps aggregate throughput with integrated Fibre Channel Forwarder (FCF) |
| Fibre channel support | Native Fibre Channel (16Gb/8Gb) switching and FCoE convergence |
| Operating system | ONIE; supports Dell SmartFabric OS10 unified storage edition |
| Power supply | Dual redundant hot-plug power supplies with hot-swappable fan trays |
Compatible parts
Network adapters
540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
OCP adapters
540-BBHB Dell Broadcom 57414 Dual Port 10/25GbE SFP28 OCP 3.0 Mezzanine Network Adapter
Transceivers
407-BCBF Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF)
407-BCBI Dell 32Gb Short Wave SFP28 Fibre Channel Optical Transceiver
Rail kits
770-BCKW Dell ReadyRails II Sliding Rails for 2U PowerEdge Servers (B6)
Works together
How the Dell PowerSwitch S4148U-ON connects to servers, storage and the network: 1 way, with the parts and products on each path.
Fibre Channel SAN
Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).
Servers
Dell PowerEdge C4140 1U rack
Dell PowerEdge R440 1U rack
Dell PowerEdge R540 2U rack
Dell PowerEdge R640 1U rack
Dell PowerEdge R740 2U rack
Dell PowerEdge R740xd 2U rack
Adapters for the server
540-BBUU Dell Emulex LPe31002 Dual Port 16Gb Fibre Channel Host Bus Adapter
540-BBUV Dell QLogic 2692 Dual Port 16Gb Fibre Channel Host Bus Adapter
540-BCMS Dell QLogic 2770 Single Port 32Gb Fibre Channel PCIe Adapter
540-BCMT Dell QLogic 2772 Dual Port 32Gb Fibre Channel PCIe Adapter
Storage
Dell Unity 350F 2U rack
Dell Unity 450F 2U rack
Dell Unity 550F 2U rack
Dell Unity 650F 2U rack
Dell VMAX 950F system bay multi-cabinet
Dell PowerMax 2000 system bay / standard rack
Optics
Plan and size it
- Draw this setup in the topology planner mrplanb.com
- Add up rack power and space rack-density.com
- Virtualization storage Ledger: scored storage platforms mrplanb.com
- SAN transport and NVMe over FC for backup mrplanb.com
- Dell E-Lab Navigator (Dell interoperability) dell.com
Check compatibility with Dell
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell PowerSwitch S4148U-ON.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent models from other brands
Buying a used PowerSwitch S4148U-ON: what to check
Test native Fibre Channel mode on unified ports 1-24 using FC SFPs, confirm OS10 SAN fabric license features, inspect dual power modules, and verify QSFP28 uplink ports.
FAQ
How do the unified ports function on the S4148U-ON?
Ports 1 through 24 can be configured individually or in port groups to operate as native 16Gb/8Gb Fibre Channel SAN ports or standard 10GbE Ethernet ports.
Does the S4148U-ON support NPIV proxy gateway mode?
Yes, N_Port ID Virtualization (NPIV) Access Gateway mode allows connecting to upstream Brocade or Cisco FC fabrics.
Buying or selling PowerSwitch S4148U-ON?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell PowerSwitch S4100 Series Spec Sheet, checked 2026-10-27