Overview QSFP+40G-eSM4 Compatible QSFP+ Optical Transceiver Module is designed for use in 40GBASE Ethernet throughput up to 10km over single mode fiber (SMF) using a wavelength of 1310nm via a MTP/MPO-12 connector. It provides high-density and low-power 40GBASE Ethernet solution for data centers, high-performance computing networks, enterprise core and distribution layer applications. It is fully compliant with the QSFP+ MSA and IEEE 802.3ae 10GBASE-LR/LW and OTN data rates OTU2, OTU1e, and OTU2e per the ITU. standard. Specification Compatible QSFP+40G-eSM4 Vendor Name LR Form Factor QSFP+ Max Data Rate 44.4Gbps Wavelength 1310nm Max Cable Distance 10km@SMF Connector MTP/MPO-12 Media SMF Transimitter Type 4x DFB Receiver Type PIN DDM/DOM Supported Commercial Temperature Range 0 to 70C (32 to 158F) TX Power -6~-1dBm Receiver Sensitivity lt,-14.4dBm Power Consumption 2.5W Extinction Ratio 6dB Modulation Format NRZ CDR None Transmit and Dispersion Penalty 2.6dB Powerbudget 4.5dB Packaging Technology BOX Packaging FEC Function  Supported Protocols 40Gigabit Ethernet, MSA Compliant Application 10GBASE-LR/LW 10G Ethernet, OTU2, OTU1e, OTU2e, Data Center FAQ 1. How to ship the goods? Lonrise work with DHL,FEDEX,UPS and TNT. Your order will be dispatched by express delivery door to door. 2. Whats your payment term? We always accept 10% advance payment. For long term cooperation, we can consider to apply credit accordingly. Related products PN DESCRIPTION DATA RATE REACH TX RX OUTPUT POWER SENSITIVITY HXQ40S QSFP+ SR4 40Gbps 100M 850nm VCSEL PIN -7.6~+2.4dBm ≦-11.1dBm HXQ40S3 QSFP+ eSR4 40Gbps 300M 850nm VCSEL PIN -7.6~+2.4dBm ≦-11.1dBm HXQ40CG QSFP+ CWDM GR4 40Gbps 2KM CWDM DFB PIN -7.5~+2.5dBm ≦-10dBm HXQ40PI QSFP+ PSM IR4 40Gbps 2KM 1310nm DFB PIN -5.5~+1.5dBm ≦-12.5dBm HXQ40L QSFP+ LR4 40Gbps 10KM CWDM DFB PIN -7.5~+2.5dBm ≦-10dBm HXQ40Le QSFP+ eSM4 40Gbps 10KM 1310nm DFB PIN -5.5~+1.5dBm ≦-12.6dBm HXQ40E QSFP+ ER4 40Gbps 40KM CWDM DFB PIN -2.7~+4.5dBm ≦-19dBm