Q: Will this work in place of the Dell SFP-10G-LR, 407-BCDT, 407-BBOP, or 407-BBZV?
A: Yes. This transceiver is designed as a drop-in replacement for all four Dell reference SKUs. It complies with the same IEEE 802.3ae 10GBASE-LR standard, operates at the same 1310nm wavelength, supports the same 10km reach over single-mode fibre, and uses the same SFP+ form factor and duplex LC connector. The module is plug-and-play compatible with Dell networking equipment and PowerEdge servers that accept these OEM part numbers.
Q: Which Dell platforms support this transceiver?
A: This module is compatible with Dell Networking switches and Dell EMC PowerEdge servers that feature SFP+ ports and support 10GBASE-LR optics. Confirmed compatible server families include PowerEdge R430, R440, R530, R540, R630, R640, R730, R740, R740xd, R840, R940, T430, T440, T640, C4140, C6420, FC640, M640, R6415, R7415, R7425, and R940xa. For Dell Networking switch compatibility, the module works in any Dell switch with SFP+ slots that accepts the SFP-10G-LR standard.
Q: What type of fibre is required for 10km reach, and will this work with OM3 or OM4 multi-mode fibre?
A: This transceiver requires OS1 or OS2 single-mode fibre (SMF) to achieve the specified 10km reach at 1310nm. It will not operate correctly over OM3 or OM4 multi-mode fibre, which are designed for 850nm multi-mode optics like 10GBASE-SR. Single-mode fibre has a core diameter of approximately 9 microns, while multi-mode fibre cores are 50 or 62.5 microns. The wavelength, fibre type, and connector must all match the 10GBASE-LR specification.
Q: Can I monitor link quality and optical power in real time using this module?
A: Yes. This transceiver includes Digital Diagnostic Monitoring (DOM) support per SFF-8472, accessible via the module's 2-wire serial interface. DOM provides real-time access to transmit optical power, receive optical power, module temperature, laser bias current, and supply voltage. Most Dell switch operating systems and server management tools can read these parameters, enabling you to verify link budget, detect marginal optical power levels, and troubleshoot fibre degradation before errors occur.
Q: What is the maximum optical power budget, and will this transceiver support distances shorter than 10km without attenuation?
A: The IEEE 802.3ae 10GBASE-LR standard specifies a minimum transmitter output power and maximum receiver sensitivity that together define an optical power budget sufficient for 10km over standard single-mode fibre with typical connector and splice losses. This module can operate over shorter distances (such as 1km, 5km, or intra-building links) without additional attenuation, provided the received optical power does not exceed the receiver overload threshold. For very short links (under 2km with low-loss fibre), check receiver sensitivity specifications or consider using a fibre attenuator if DOM readings indicate Rx power is approaching or exceeding the maximum safe input level.