Dell 407-BBRC Compatible 40G QSFP+ LM4 Transceiver Module
Built for hosts recognizing 407-BBRC, this HT-manufactured QSFP+ module delivers 40G transmission at 1310nm. Its rated reach is 150m on OM3 / 2km on SMF, with Duplex LC as the physical interface. The specifications and engineering guidance below support procurement teams match an equipment parts list to a clearly defined optical product, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: 407-BBRCHT Part Number: QSFP-LX4-40G
Product Highlights
- Compatible alternative to Dell 407-BBRC
- 40G connectivity at 41.2Gbps (4x 10.3Gbps)
- Optical wavelength: 1310nm
- Specified reach: 150m on OM3 / 2km on SMF
- Duplex LC / MMF/SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| Dell Compatible | 407-BBRC |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-LX4-40G |
| Form Factor | QSFP+ |
| Max. Data Rate | 41.2Gbps (4x 10.3Gbps) |
| Wavelength | 1310nm |
| Max. Transmission Distance | 150m@OM3/2km@SMF |
| Connector | Duplex LC |
| Media | MMF/SMF |
| Transimitter Type | CWDM4 DFB |
| Receiver Type | PIN |
| TX Power | -5~3.5dBm |
| Receiver Sensitivity (OMA) | <-10.5dBm |
| Receiver Overload | 3.5dB |
| Power Budget | 5.5 dB |
| Max. Power Consumption | ≤3.5W |
| Extinction Ratio | >3.5dB |
| Host FEC | Supported |
| Bit Error Ratio (BER) | 1E-12 |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | 40G Ethernet, MSA Compliant |
Applications and Optical Link Design
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.
Before deployment, check the host port type, supported data rate and firmware requirements. The 40G interface configuration must match the remote equipment; sharing a QSFP+ housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 150m on OM3 / 2km on SMF reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -5~3.5dBm; the stated optical power budget is 5.5 dB. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Procurement and Asset Identification
A useful purchase order identifies the host platform, expected OEM code and optical standard separately. This prevents a module with the same housing but another wavelength, reach or identification profile from being substituted. For mixed deployments, keep one order line per OEM reference and reconcile each received unit with its intended port. For this model, the principal parameters are data rate 41.2Gbps (4x 10.3Gbps), wavelength 1310nm, rated reach 150m on OM3 / 2km on SMF.
Dell Compatibility and Factory Testing
The module is checked for host recognition as 407-BBRC, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Ordering Information
Use 407-BBRC as the compatibility cross-reference and QSFP-LX4-40G as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Quality Assurance and Packaging
Each 407-BBRC compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
Frequently Asked Questions
Is this an original Dell transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 407-BBRC, not an original Dell-branded module.
Which fiber and connector are required?
Use Duplex LC with MMF/SMF. The specified maximum reach is 150m on OM3 / 2km on SMF, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.