407-BBOY: Dell 100GbE QSFP28 SR4 Optical Transceiver (850nm, 100m MPO-12)
Also listed as: 05C5R2, 5C5R2, FTL410QE4C, AFBR-89CDDZ · made by Finisar
The Dell 407-BBOY is a Dell 100GbE QSFP28 SR4 Optical Transceiver (850nm, 100m MPO-12) providing reliable optical connectivity across multimode fiber infrastructure for Dell R750, R760, XE8545, S5248F-ON systems.
Specifications
| Part number | 407-BBOY |
|---|---|
| Brand | Dell |
| Made by | Finisar |
| Type | Transceivers |
| Other numbers | 05C5R2, 5C5R2, FTL410QE4C, AFBR-89CDDZ |
| Status | current |
| Interface | QSFP28 Optical Transceiver |
| Speed | 100GbE |
| Ports | 1x MPO-12 (850nm Short Reach MMF up to 100m) |
| Tdp (W) | 3 |
About the 407-BBOY
The Dell 407-BBOY is a Dell 100GbE QSFP28 SR4 Optical Transceiver (850nm, 100m MPO-12) designed for optical transmission across multimode fiber infrastructure. Operating over a calibrated optical wavelength with LC or MPO connectors, the 407-BBOY converts electrical data from host network adapters into optical signals for data center interconnects. In Dell's networking portfolio, 407-BBOY provides low-latency optical links for servers and switches.
Compatibility
The 407-BBOY module installs into compatible transceiver cages on Dell PowerEdge network adapters and Dell PowerSwitch enterprise switches including R750, R760, XE8545, S5248F-ON. The 407-BBOY operates over standard multimode optical fiber patch cables up to its rated transmission distance. Supported ports auto-negotiate link parameters based on installed 407-BBOY optics.
How to identify a genuine unit
Authentic Dell 407-BBOY transceivers carry a silver label displaying DP/N 05C5R2, transceiver model codes, and manufacturing serialization. When installed in Dell switches or network interface cards, the 407-BBOY module registers via internal EEPROM with digital optical monitoring (DOM) reporting laser transmit and receive power.
Buying used
When purchasing a pre-owned 407-BBOY, inspect the optical bore for dust, scratches, or ferrule contamination using a fiber inspection scope. Verify that the metal bail latch on the 407-BBOY operates smoothly and locks firmly into host cages. Test in a switch or adapter port to confirm that DOM telemetry on the 407-BBOY reports normal optical power levels.
Fits these models
- Dell PowerEdge R750
- Dell PowerEdge R760
- Dell PowerEdge XE8545
- Dell PowerSwitch S5248F-ON
- Dell PowerSwitch S5296F-ON
Works together
How the Dell 407-BBOY 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-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
540-BDCQ Dell Broadcom 57508 Dual Port 100GbE QSFP56 OCP 3.0 Adapter
Switches
Dell PowerSwitch S5232F-ON 1U rack
Dell PowerSwitch S5248F-ON 1U rack
Dell PowerSwitch S4112F-ON 1U rack
Dell PowerSwitch S4128F-ON 1U rack
Storage
Dell PowerStore 1200T 2U rack
Dell PowerStore 3200T 2U rack
Dell PowerStore 5200T 2U rack
Dell PowerStore 9200T 2U rack
Dell PowerStore 7000T 2U rack
HPE Alletra Storage MP 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-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
- 540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
- 540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
- 540-BDCQ Dell Broadcom 57508 Dual Port 100GbE QSFP56 OCP 3.0 Adapter
Switches
- Dell PowerSwitch S5232F-ON 1U rack
- Dell PowerSwitch S5248F-ON 1U rack
- Dell PowerSwitch S4112F-ON 1U rack
- Dell PowerSwitch S4128F-ON 1U rack
Storage
Dell PowerScale F900 2U rack
Dell PowerScale F600 1U rack
Dell PowerScale H700 4U- Dell PowerStore 1200T 2U rack
- Dell PowerStore 3200T 2U rack
- Dell PowerStore 5200T 2U rack
Hyperconverged cluster
Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.
HCI nodes
HPE SimpliVity 325 Gen10 Plus v2 1U rack
HPE SimpliVity 380 Gen10 G 2U rack
HPE SimpliVity 325 Gen10 1U rack
HPE SimpliVity 380 Gen10 2U rack
Adapters for the server
- 540-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
- 540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
- 540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
- 540-BDCQ Dell Broadcom 57508 Dual Port 100GbE QSFP56 OCP 3.0 Adapter
Switches
- Dell PowerSwitch S5232F-ON 1U rack
- Dell PowerSwitch S5248F-ON 1U rack
- Dell PowerSwitch S4112F-ON 1U rack
- Dell PowerSwitch S4128F-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-BBOY.
- 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 FTL410QE4C Finisar 100GBASE-SR4 QSFP28 Optical Transceiver OEM base
Buying or selling 407-BBOY?
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 100GbE QSFP28 SR4 Optical Transceiver Specifications, checked 2026-10-27