All Adtran® compatible 1G SFP transceiver modules are certified for functionality, reliability and performance under rigorous testing parameters. Every 1G SFP is RoHS and MSA compliant and built with Tier 1 grade components and lasers. Each Adtran® compatible 1G SFP module is individually tested in it's intended application with identical functionality to the OEM product. All ENET 1G SFP modules are backed by an industry-leading lifetime replacement warranty and technical support.