All Dell/Force10 compatible DWDM XFP transceiver modules are certified for functionality, reliability and performance under rigorous testing parameters. Every DWDM XFP is RoHS and MSA compliant and built with Tier 1 grade components and lasers. Each Dell compatible DWDM XFP module is individually tested in it's intended application with identical functionality to the OEM product. All ENET DWDM XFP modules are backed by an industry-leading lifetime replacement warranty and technical support.