D-Link DEM-433XT-DD SFP Transceiver 1 Port 10GBASE-ER (with DDM) for singlemode fiber optic cable, power supply 3.3V (up to 40km)THis D-Link DEM-433XT-DD is a high performance and cost-effective SFP+ module, supporting data-rate of 10.3125Gbps (10GBA..