This H3C SFP-GE-LH40-SM1310-D is a high performance and cost effective small form factor pluggable (SFP) transceiver for 1000BASE-EX Gigabit Ethernet and 1G Fiber Channel application. It is fully comply with the SFP Multi-Sourcing Agreement (MSA) and can be used on the MSA compliant networking equipment. The SFP transceiver consists of the below sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the 1310nm DFB laser and the PIN photo-detector. The SFP transceiver module is a Class 1 laser product complies with FDA/CDRH and IEC-60825 standards.