The Engenius SFP321310 EnGenius 10G Ethernet Transceiver is a single mode 10km - LR SFP+ transceiver that is designed for use with 10GBASE-LR SFP+ transceivers. It offers a maximum data rate of 10Gbps and is compliant with the IEEE 802.3ae 10GBASE-LR standard. The SFP321310 is also backward compatible with the IEEE 802.3af and 802.3at 10GBASE-LR standards. The Engenius SFP321310 EnGenius 10G Ethernet Transceiver is a single mode 10km - LR SFP+ transceiver that is designed for use with 10GBASE-LR SFP+ transceivers. It offers a maximum data rate of 10Gbps and is compliant with the IEEE 802.3ae 10GBASE-LR standard. The SFP321310 is also backward compatible with the IEEE 802.3af and 802.3at 10GBASE-LR standards.