DELL Force10 GP-QSFP-40GE-1LR Compatible 40G QSFP+ LR4 1310nm (CWDM4) 10km LC SMF DDM Transceiver Module
DELL Force10 GP-QSFP-40GE-1LR Compatible QSFP+ LR4 40GbE Transceiver Module enables 10km transmission over SMF, which supports 40G Ethernet and InfiniBand.