407-BCBF: Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF)
Also listed as: 0RN7NW, RN7NW, FTLF8536P4BCL, AFBR-710ASMZ · made by Finisar
The Dell 407-BCBF is a Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF) providing reliable optical connectivity across multimode fiber infrastructure for Dell R750, R650, R760, R660 systems.
Specifications
| Part number | 407-BCBF |
|---|---|
| Brand | Dell |
| Made by | Finisar |
| Type | Transceivers |
| Other numbers | 0RN7NW, RN7NW, FTLF8536P4BCL, AFBR-710ASMZ |
| Status | current |
| Interface | SFP28 Optical Transceiver |
| Speed | 25GbE |
| Ports | 1x LC Duplex (850nm Short Reach MMF up to 100m) |
| Tdp (W) | 1 |
About the 407-BCBF
The Dell 407-BCBF is a Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF) designed for optical transmission across multimode fiber infrastructure. Operating over a calibrated optical wavelength with LC or MPO connectors, the 407-BCBF converts electrical data from host network adapters into optical signals for data center interconnects. In Dell's networking portfolio, 407-BCBF provides low-latency optical links for servers and switches.
Compatibility
The 407-BCBF module installs into compatible transceiver cages on Dell PowerEdge network adapters and Dell PowerSwitch enterprise switches including R750, R650, R760, R660. The 407-BCBF operates over standard multimode optical fiber patch cables up to its rated transmission distance. Supported ports auto-negotiate link parameters based on installed 407-BCBF optics.
How to identify a genuine unit
Authentic Dell 407-BCBF transceivers carry a silver label displaying DP/N 0RN7NW, transceiver model codes, and manufacturing serialization. When installed in Dell switches or network interface cards, the 407-BCBF module registers via internal EEPROM with digital optical monitoring (DOM) reporting laser transmit and receive power.
Buying used
When purchasing a pre-owned 407-BCBF, inspect the optical bore for dust, scratches, or ferrule contamination using a fiber inspection scope. Verify that the metal bail latch on the 407-BCBF operates smoothly and locks firmly into host cages. Test in a switch or adapter port to confirm that DOM telemetry on the 407-BCBF reports normal optical power levels.
Fits these models
- Dell PowerEdge R750
- Dell PowerEdge R650
- Dell PowerEdge R760
- Dell PowerEdge R660
- Dell PowerSwitch S5248F-ON
- Dell PowerSwitch S5224F-ON
Works together
How the Dell 407-BCBF connects to servers, storage and the network: 3 ways, with the hardware on each path.
iSCSI and NVMe/TCP over Ethernet
Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.
Adapters for the server
540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
540-BBHB Dell Broadcom 57414 Dual Port 10/25GbE SFP28 OCP 3.0 Mezzanine Network Adapter
540-BBJL Dell Mellanox ConnectX-4 Lx Dual Port 25GbE SFP28 Network Daughter Card (rNDC)
540-BCND Dell Mellanox ConnectX-6 Lx Dual Port 25GbE SFP28 PCIe Adapter
Switches
Dell PowerSwitch S5248F-ON 1U rack
Dell PowerSwitch S4112F-ON 1U rack
Dell PowerSwitch S4128F-ON 1U rack
Dell PowerSwitch S4148F-ON 1U rack
Storage
Dell PowerStore 5000T 2U rack
Dell PowerStore 1000T 2U rack
Dell PowerStore 1000X 2U rack
Dell PowerStore 1200T 2U rack
Dell PowerStore 3000T 2U rack
Dell PowerStore 3200T 2U rack
File storage (NFS and SMB)
Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.
Adapters for the server
- 540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
- 540-BBHB Dell Broadcom 57414 Dual Port 10/25GbE SFP28 OCP 3.0 Mezzanine Network Adapter
- 540-BBJL Dell Mellanox ConnectX-4 Lx Dual Port 25GbE SFP28 Network Daughter Card (rNDC)
- 540-BCND Dell Mellanox ConnectX-6 Lx Dual Port 25GbE SFP28 PCIe Adapter
Switches
- Dell PowerSwitch S5248F-ON 1U rack
- Dell PowerSwitch S4112F-ON 1U rack
- Dell PowerSwitch S4128F-ON 1U rack
- Dell PowerSwitch S4148F-ON 1U rack
Storage
- Dell PowerStore 5000T 2U rack
Dell PowerScale A300 4U
Dell PowerScale F200 1U rack
Dell PowerScale F600 1U rack
Dell PowerScale F900 2U rack
Dell PowerScale H700 4U
Hyperconverged cluster
Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.
HCI nodes
Dell VxRail E Series E560 1U rack (1 node)
Dell VxRail P Series P570F 2U rack (1 node)
HPE SimpliVity 325 Gen10 Plus v2 1U rack
HPE SimpliVity 380 Gen10 G 2U rack
Adapters for the server
- 540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
- 540-BBHB Dell Broadcom 57414 Dual Port 10/25GbE SFP28 OCP 3.0 Mezzanine Network Adapter
- 540-BBJL Dell Mellanox ConnectX-4 Lx Dual Port 25GbE SFP28 Network Daughter Card (rNDC)
- 540-BCND Dell Mellanox ConnectX-6 Lx Dual Port 25GbE SFP28 PCIe Adapter
Switches
- Dell PowerSwitch S5248F-ON 1U rack
- Dell PowerSwitch S4112F-ON 1U rack
- Dell PowerSwitch S4128F-ON 1U rack
- Dell PowerSwitch S4148F-ON 1U rack
Plan and size it
- Draw this setup in the topology planner mrplanb.com
- Add up rack power and space rack-density.com
- iSCSI explained mrplanb.com
- Virtualization storage Ledger: scored storage platforms mrplanb.com
- Network monitoring tools compared 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 407-BCBF.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent part numbers
- Finisar FTLF8536P4BCL Finisar 25GBASE-SR SFP28 Optical Transceiver OEM base
Buying or selling 407-BCBF?
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 25GbE SFP28 SR Optical Transceiver Specifications, checked 2026-10-27