Dell (Force10) 407-BBWK Compatible 25GBASE-SR SFP28 for Dell PowerSwitch S5x00F-ON

EdgeOptic's 407-BBWK compatible is a Dell (Force10)-coded 25GBASE-SR SFP28 transceiver built as a direct replacement for the Dell 407-BBWK. It ships with Dell-recognized EEPROM vendor and part-number strings so Dell PowerSwitch S5x00F-ON series and PowerEdge platforms with 25G SFP28 interfaces identify the optic as a native Dell part. Link-up, receive-optical-signal and DOM telemetry surface through the host NOS on the standard optic-inventory path (OS10 Enterprise and SmartFabric OS10) without any vendor-override step.

Optical behavior is 25GBASE-SR per IEEE 802.3by Clause 112 over duplex multi-mode fiber: 100m on OM4, 70m on OM3. Line signaling rate is 25.78125 Gbd, single-rate, per IEEE 802.3by Clause 112. Transmit power is -8.4 to +2.4 dBm, receive sensitivity -10.3 dBm, link budget 5.3 dB per IEEE 802.3by Clause 112 Table 112-3 (RS-FEC per Clause 108 operates at the PCS layer and does not alter the optical power budget). Wavelength 850nm VCSEL, duplex LC/UPC, DOM per SFF-8472, under 1 W typical power consumption per the SFP28 MSA envelope. Operating case temperature is 0 to 70 degrees Celsius (standard commercial range), distinct from the Dell 85C extended-temperature ordering codes in the same SFP28 SR family.

407-BBWK is a Dell 25GbE SFP28 SR ordering code specified against Dell PowerSwitch data-center switches with 25G SFP28 interfaces. The primary in-scope platforms are the Dell PowerSwitch S5x00F-ON series: S5248F-ON (48 x 25G SFP28 cages plus 4 x 100G QSFP28 uplinks), S5212F-ON, S5232F-ON, S5224F-ON and S5296F-ON. Dell PowerEdge servers with rNDC or OCP 25G SFP28 adapters are also in scope. 407-BBWK belongs to the Force10-to-PowerSwitch rebrand lineage: the Dell Networking data-center range began as Force10 Networks before Dell's 2011 acquisition, and Dell Networking SFP28 OPNs like 407-BBWK remain tagged against the Force10 / PowerSwitch platform family on Dell's channel and spare-part systems.

407-BBWK sits inside a tightly-clustered Dell SFP28 SR OPN range. Related Dell ordering codes in the same product class include 407-BBXU (specifically the 'No FEC' variant per the Dell.com 407-BBXU product page), 407-BCHI (the 85C extended-temperature variant of the Dell 25GbE SFP28 SR), WYMGJ (an alternate Dell 25GbE SFP28 SR at 85C, also cross-listed by resellers as 407-BBZS and P7D7R) and a handful of other Dell SFP28 SR OPNs that target the same PowerSwitch platform range. 407-BBWK itself is the standard-commercial-temperature 25GBASE-SR ordering code; buyers matching an existing Dell deployment against this specific OPN are replacing the same 850nm VCSEL SFP28 SR optical class.

Dell's public position on optical compatibility for standard PowerSwitch platforms is that MSA-compliant 25G SFP28 modules operate on the host without a platform-side vendor-lock step. EdgeOptic's 407-BBWK compatible is built to the SFP28 MSA (SFF-8402 mechanical and high-speed electrical, SFF-8432 management interface, SFF-8472 diagnostics) and carries the Dell EEPROM vendor and part-number strings that OS10 reads on optic insertion, so the module is identified as a native Dell optic on the standard OS10 inventory path. Operators running a locked optic profile on a specific PowerSwitch SKU can request the exact EEPROM vendor and PN strings from EdgeOptic for verification before deployment.

On FEC, 25G FEC mode is configured at the MAC layer on each link partner and the optical path is agnostic to the host FEC profile. RS-FEC per IEEE 802.3by Clause 108 is the default path for 25GBASE-SR on Dell PowerSwitch and is the mode 407-BBWK is specified against; Clause 74 Fire Code FEC (BASE-R) and no-FEC operation are supported at the optical layer where both link partners are configured for that FEC profile. The Dell.com 407-BBXU listing is explicitly labeled 'No FEC' in the same SFP28 SR class, which is a MAC-layer FEC-profile selection on the host port rather than an optical difference. DOM registers for transmit power, receive power, supply voltage, laser bias current and module case temperature are accessible through standard SFF-8472 reads on the OS10 transceiver-diagnostics interface and on any EEPROM-aware link partner. Every unit is factory-tested to the 25GBASE-SR optical specification per IEEE 802.3by Clause 112 before dispatch.

For volume pricing, Dell EEPROM vendor and part-number strings for pre-deployment verification on a specific PowerSwitch S5x00F-ON SKU and OS10 build, or confirmation of the 407-BBWK optical profile against an existing Dell deployment, contact our sales team and we will respond within one business day.