QSFP+ 40GBrocade 40Gigabit Ethernet, coding as Brocade 40G-QSFP-LR4 also compatible ^^ 40GBASE-LR440G QSFP+ transceiver module, 40Gbps, single mode, 1310nm, CWDM4, 10km, LC duplex connector, Hot Pluggable, support DOM ^^ ProtocolsSATA/SAS3, IEEE 802.3 ba, QSFP MSA Compliant ^^ 3 Warranty30-Days Free-returned, 65-Days Free-replacement 5-Years Free-maintenance ^^ CustomizationFibermall supports regular custom service for your options