This Axiom 10 Gbps XFP Transceiver is optimized to provide reliable, high-performance, and cost-effective fiber optics in D-Link products. Designed and tested 100% compatible with the D-Link DEM-421XT transceiver, the Axiom DEM-421XT-AX is rigorously qualified to function identically in all D-Link and Brocade product lines. Complying with the Multi-Source Agreement (MSA) and supporting the digital diagnostic monitoring interface (SFF-8472) enables this transceiver to work in all MSA compliant platforms as well as function with other manufacturer's products within the same network.